Repository: OpenRefine/OpenRefine (java)

Issue:
Mass edit of new blank cells corrupts project in 3.9.2
Initially mentioned in [this forum thread](https://forum.openrefine.org/t/after-adding-rows-and-editing-a-cell-project-failing-to-load/2214)

### To Reproduce
Steps to reproduce the behavior:
1. Using OpenRefine 3.9.2
2. Open any project
3. Add multiple rows to the end of the project
4. Edit one of the cells and click "Apply to all identical cells"



### Current Results
The project cannot be loaded. After editing and upon re-opening the project, the browser is redirected to the loading screen.
### Expected Behavior
The result entered into the edit dialog box should be applied to all empty cells in the column.

### Versions
 - Operating System: Ubuntu 24.04
 - Browser Version: Firefox 136.0.3
 - JRE or JDK Version: 21.0.5
 - OpenRefine: 3.9.2


Pull request description:
Fix deserialization of RowAdditionOperation.
Fixes #7245.

See [my comment](https://github.com/OpenRefine/OpenRefine/issues/7245#issuecomment-2780552271) for an explanation of the root cause of the issue.

To fix it, I have:
* made sure that the operation doesn't add its own list of rows to the project, but a copy of it, so that its metadata remains unchanged when further changes happen to the grid
* introduced a new serialization format for the operation. The goal with this move is to make sure that we are able to deserialize all values that have already made it into people's workspaces. Using the fact that the row addition operation only lets the user add empty rows for now, I change the deserialization code so that the `rows` parameter of the operation is parsed as a generic array, and only its length is taken into account to generate a fresh list of empty rows (we really should have gone for just encoding the number of rows in the operation metadata, not the rows, but it's too late). A new parameter (`addedRows`) is introduced, which can be used in the future to retain actual row data (if the UI is ever made to support it), in which case the injection of the `Pool` object will need to be added on top.

I have also added a regression test to demonstrate the fix.

I would recommend to release this as 3.9.3 as soon as possible.

Patch:
diff --git a/.github/workflows/snapshot_release.yml b/.github/workflows/snapshot_release.yml
index 87a1e1d78..2182420c5 100644
--- a/.github/workflows/snapshot_release.yml
+++ b/.github/workflows/snapshot_release.yml
@@ -252,7 +252,7 @@ jobs:
     - name: Upload release asset for Windows (with Java)
       id: upload-release-asset-win-with-java
       if: github.event_name == 'release'
-      uses: shogo82148/actions-upload-release-asset@v1.7.8
+      uses: shogo82148/actions-upload-release-asset@v1.8.0
       with:
         upload_url: ${{ steps.get_release_upload_url.outputs.upload_url }}
         asset_path: ./packaging/target/openrefine-win-with-java-${{ steps.version_string_variable.outputs.output_value }}.zip
@@ -280,7 +280,7 @@ jobs:
     - name: Upload Release Asset Linux
       id: upload-release-asset-linux
       if: github.event_name == 'release'
-      uses: shogo82148/actions-upload-release-asset@v1.7.8
+      uses: shogo82148/actions-upload-release-asset@v1.8.0
       with:
         upload_url: ${{ steps.get_release_upload_url.outputs.upload_url }}
         asset_path: ./packaging/target/openrefine-linux-${{ steps.version_string_variable.outputs.output_value }}.tar.gz
@@ -297,7 +297,7 @@ jobs:
     - name: Upload Release Asset Mac
       id: upload-release-asset-mac
       if: github.event_name == 'release'
-      uses: shogo82148/actions-upload-release-asset@v1.7.8
+      uses: shogo82148/actions-upload-release-asset@v1.8.0
       with:
         upload_url: ${{ steps.get_release_upload_url.outputs.upload_url }}
         asset_path: ./packaging/target/openrefine-mac-${{ steps.version_string_variable.outputs.output_value }}.dmg
@@ -385,7 +385,7 @@ jobs:
     - name: Upload release asset for Windows (with Java)
       id: upload-release-asset-win-with-java-installer
       if: github.event_name == 'release'
-      uses: shogo82148/actions-upload-release-asset@v1.7.8
+      uses: shogo82148/actions-upload-release-asset@v1.8.0
       with:
         upload_url: ${{ steps.get_release_upload_url.outputs.upload_url }}
         asset_path: ./packaging/target/openrefine-win-with-java-installer-${{ needs.mac_test_and_deploy.outputs.version_number_string }}.exe
diff --git a/benchmark/pom.xml b/benchmark/pom.xml
index 5b552f99c..fa70ac001 100644
--- a/benchmark/pom.xml
+++ b/benchmark/pom.xml
@@ -149,7 +149,7 @@
         </plugin>
         <plugin>
           <artifactId>maven-surefire-plugin</artifactId>
-          <version>3.5.2</version>
+          <version>3.5.3</version>
           <configuration>
             <skipTests>true</skipTests>
           </configuration>
diff --git a/extensions/database/pom.xml b/extensions/database/pom.xml
index 25302ef82..df56cd828 100644
--- a/extensions/database/pom.xml
+++ b/extensions/database/pom.xml
@@ -109,7 +109,7 @@
     <dependency>
       <groupId>org.mariadb.jdbc</groupId>
       <artifactId>mariadb-java-client</artifactId>
-      <version>3.5.2</version>
+      <version>3.5.3</version>
     </dependency>
     <dependency>
       <groupId>org.xerial</groupId>
diff --git a/main/src/com/google/refine/operations/row/RowAdditionOperation.java b/main/src/com/google/refine/operations/row/RowAdditionOperation.java
index f799f18c7..4afe4589d 100644
--- a/main/src/com/google/refine/operations/row/RowAdditionOperation.java
+++ b/main/src/com/google/refine/operations/row/RowAdditionOperation.java
@@ -31,6 +31,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
+import java.util.stream.Collectors;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonIgnore;
@@ -49,15 +50,39 @@ public class RowAdditionOperation extends AbstractOperation {
     final private List<Row> _rows;
     final private int _insertionIndex;
 
+    public RowAdditionOperation(
+            List<Row> rows,
+            int insertionIndex) {
+        _rows = rows;
+        _insertionIndex = insertionIndex;
+    }
+
+    /**
+     * Deserialization constructor to provide compatibility for the legacy serialization format. In this format, only
+     * the number of rows is relevant: the contents of the rows must be ignored, because they might have been corrupted
+     * due to mutability issues in https://github.com/OpenRefine/OpenRefine/issues/7245.
+     * 
+     * @param addedRows
+     *            the rows to add to the project
+     * @param rows
+     *            a legacy serialization field, whose length is is the only thing that matters. If provided, it will be
+     *            converted to a list of empty rows of the same size.
+     * @param insertionIndex
+     *            the place in the grid where to insert this list.
+     * @deprecated should not be called directly, is only provided for JSON deserialization.
+     */
+    @Deprecated
     @JsonCreator
     public RowAdditionOperation(
-            @JsonProperty("rows") List<Row> rows,
+            @JsonProperty("addedRows") List<Row> addedRows,
+            @JsonProperty("rows") List<Object> rows,
             @JsonProperty("insertionIndex") int insertionIndex) {
-        _rows = rows;
+        _rows = addedRows != null ? addedRows
+                : (rows == null ? List.of() : rows.stream().map(r -> new Row(0)).collect(Collectors.toList()));
         _insertionIndex = insertionIndex;
     }
 
-    @JsonProperty("rows")
+    @JsonProperty("addedRows")
     public List<Row> getRows() {
         return _rows;
     }
diff --git a/modules/core/src/main/java/com/google/refine/model/Cell.java b/modules/core/src/main/java/com/google/refine/model/Cell.java
index 119f90e0d..084452272 100644
--- a/modules/core/src/main/java/com/google/refine/model/Cell.java
+++ b/modules/core/src/main/java/com/google/refine/model/Cell.java
@@ -193,6 +193,13 @@ public class Cell implements HasFields, Serializable {
         return new Cell((Serializable) value, recon);
     }
 
+    /**
+     * Return a deep copy of this object, making sure that if one instance is modified, the other isn't.
+     */
+    public Cell deepCopy() {
+        return new Cell(value, recon == null ? null : recon.dup());
+    }
+
     @Override
     public String toString() {
         // TODO this is kept like this for now, but it should rather be a string which makes the difference
diff --git a/modules/core/src/main/java/com/google/refine/model/Row.java b/modules/core/src/main/java/com/google/refine/model/Row.java
index 2aff00999..5550ec9fa 100644
--- a/modules/core/src/main/java/com/google/refine/model/Row.java
+++ b/modules/core/src/main/java/com/google/refine/model/Row.java
@@ -38,6 +38,7 @@ import java.io.Writer;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Properties;
+import java.util.stream.Collectors;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonIgnore;
@@ -93,6 +94,19 @@ public class Row implements HasFields {
         return row;
     }
 
+    /**
+     * Make a deep copy of the row, making sure that if one is modified, the other isn't.
+     */
+    public Row deepCopy() {
+        Row row = new Row(cells.size());
+        row.flagged = flagged;
+        row.starred = starred;
+        row.cells.addAll(cells.stream()
+                .map(cell -> cell == null ? null : cell.deepCopy())
+                .collect(Collectors.toList()));
+        return row;
+    }
+
     @Override
     public Object getField(String name, Properties bindings) {
         if (FLAGGED.equals(name)) {
diff --git a/modules/core/src/main/java/com/google/refine/model/changes/RowAdditionChange.java b/modules/core/src/main/java/com/google/refine/model/changes/RowAdditionChange.java
index f3efb0f9c..5671d27e6 100644
--- a/modules/core/src/main/java/com/google/refine/model/changes/RowAdditionChange.java
+++ b/modules/core/src/main/java/com/google/refine/model/changes/RowAdditionChange.java
@@ -33,6 +33,7 @@ import java.io.Writer;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Properties;
+import java.util.stream.Collectors;
 
 import com.google.refine.ProjectManager;
 import com.google.refine.history.Change;
@@ -57,7 +58,7 @@ public class RowAdditionChange implements Change {
     @Override
     public void apply(Project project) {
         synchronized (project) {
-            project.rows.addAll(_insertionIndex, _additionalRows);
+            project.rows.addAll(_insertionIndex, _additionalRows.stream().map(row -> row.deepCopy()).collect(Collectors.toList()));
 
             project.update();
             project.columnModel.clearPrecomputes();
diff --git a/packaging/pom.xml b/packaging/pom.xml
index fe23fdbbb..8db7b5271 100644
--- a/packaging/pom.xml
+++ b/packaging/pom.xml
@@ -475,7 +475,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-surefire-plugin</artifactId>
-        <version>3.5.2</version>
+        <version>3.5.3</version>
         <configuration>
           <skip>true</skip>
         </configuration>
diff --git a/pom.xml b/pom.xml
index 042aaa7b4..ddb5b84aa 100644
--- a/pom.xml
+++ b/pom.xml
@@ -101,12 +101,12 @@
     <odfdom-java.version>0.12.0</odfdom-java.version> <!-- do not update to 0.10.0, see issue #4397 -->
     <vicino.version>1.2.1</vicino.version>
     <clojure.version>1.12.0</clojure.version>
-    <httpclient5.version>5.4.2</httpclient5.version>
+    <httpclient5.version>5.4.3</httpclient5.version>
     <httpcore5.version>5.3.4</httpcore5.version>
     <univocity-csv.version>2.9.1</univocity-csv.version>
     <swc-parser-lazy.version>3.1.9</swc-parser-lazy.version>
     <commons-io.version>2.18.0</commons-io.version>
-    <guava.version>33.4.5-jre</guava.version>
+    <guava.version>33.4.6-jre</guava.version>
     <jaxb-api.version>2.3.1</jaxb-api.version>
     <juniversalchardet.version>2.5.0</juniversalchardet.version>
     <testng.version>7.11.0</testng.version>
@@ -122,7 +122,7 @@
     <exec-maven-plugin.version>3.5.0</exec-maven-plugin.version>
     <maven-dependency-plugin.version>3.8.1</maven-dependency-plugin.version>
     <jacoco-maven-plugin.version>0.8.12</jacoco-maven-plugin.version>
-    <surefire.version>3.5.2</surefire.version>
+    <surefire.version>3.5.3</surefire.version>
     <maven-jar-plugin.version>3.4.2</maven-jar-plugin.version>
     <maven-clean-plugin.version>3.4.1</maven-clean-plugin.version>
     <git-commit-id-plugin.version>4.9.10</git-commit-id-plugin.version>


Test patch:
diff --git a/main/tests/cypress/package.json b/main/tests/cypress/package.json
index c787979ca..135c25edc 100644
--- a/main/tests/cypress/package.json
+++ b/main/tests/cypress/package.json
@@ -16,7 +16,7 @@
         "lint": "prettier --check . && eslint ."
     },
     "dependencies": {
-        "cypress": "14.2.0",
+        "cypress": "14.2.1",
         "cypress-file-upload": "^5.0.8"
     },
     "devDependencies": {
diff --git a/main/tests/cypress/yarn.lock b/main/tests/cypress/yarn.lock
index 4f00238e3..d8a23880d 100644
--- a/main/tests/cypress/yarn.lock
+++ b/main/tests/cypress/yarn.lock
@@ -12,10 +12,10 @@
   resolved "https://registry.yarnpkg.com/@colors/colors/-/colors-1.5.0.tgz#bb504579c1cae923e6576a4f5da43d25f97bdbd9"
   integrity sha512-ooWCrlZP11i8GImSjTHYHLkvFDP48nS4+204nGb1RiX/WXYHmJA2III9/e2DWVabCESdW7hBAEzHRqUn9OUVvQ==
 
-"@cypress/request@^3.0.7":
-  version "3.0.7"
-  resolved "https://registry.yarnpkg.com/@cypress/request/-/request-3.0.7.tgz#6a74a4da98d9e5ae9121d6e2d9c14780c9b5cf1a"
-  integrity sha512-LzxlLEMbBOPYB85uXrDqvD4MgcenjRBLIns3zyhx7vTPj/0u2eQhzXvPiGcaJrV38Q9dbkExWp6cOHPJ+EtFYg==
+"@cypress/request@^3.0.8":
+  version "3.0.8"
+  resolved "https://registry.yarnpkg.com/@cypress/request/-/request-3.0.8.tgz#992f1f42ba03ebb14fa5d97290abe9d015ed0815"
+  integrity sha512-h0NFgh1mJmm1nr4jCwkGHwKneVYKghUyWe6TMNrk0B9zsjAJxpg8C4/+BAcmLgCPa1vj1V8rNUaILl+zYRUWBQ==
   dependencies:
     aws-sign2 "~0.7.0"
     aws4 "^1.8.0"
@@ -30,7 +30,7 @@
     json-stringify-safe "~5.0.1"
     mime-types "~2.1.19"
     performance-now "^2.1.0"
-    qs "6.13.1"
+    qs "6.14.0"
     safe-buffer "^5.1.2"
     tough-cookie "^5.0.0"
     tunnel-agent "^0.6.0"
@@ -340,16 +340,21 @@ cachedir@^2.3.0:
   resolved "https://registry.yarnpkg.com/cachedir/-/cachedir-2.3.0.tgz"
   integrity sha512-A+Fezp4zxnit6FanDmv9EqXNAi3vt9DWp51/71UEhXukb7QUuvtv9344h91dyAxuTLoSYJFU299qzR3tzwPAhw==
 
-call-bind@^1.0.7:
-  version "1.0.7"
-  resolved "https://registry.yarnpkg.com/call-bind/-/call-bind-1.0.7.tgz#06016599c40c56498c18769d2730be242b6fa3b9"
-  integrity sha512-GHTSNSYICQ7scH7sZ+M2rFopRoLh8t2bLSW6BbgrtLsahOIB5iyAVJf9GjWK3cYTDaMj4XdBpM1cA6pIS0Kv2w==
+call-bind-apply-helpers@^1.0.1, call-bind-apply-helpers@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/call-bind-apply-helpers/-/call-bind-apply-helpers-1.0.2.tgz#4b5428c222be985d79c3d82657479dbe0b59b2d6"
+  integrity sha512-Sp1ablJ0ivDkSzjcaJdxEunN5/XvksFJ2sMBFfq6x0ryhQV/2b/KwFe21cMpmHtPOSij8K99/wSfoEuTObmuMQ==
   dependencies:
-    es-define-property "^1.0.0"
     es-errors "^1.3.0"
     function-bind "^1.1.2"
-    get-intrinsic "^1.2.4"
-    set-function-length "^1.2.1"
+
+call-bound@^1.0.2:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/call-bound/-/call-bound-1.0.4.tgz#238de935d2a2a692928c538c7ccfa91067fd062a"
+  integrity sha512-+ys997U96po4Kx/ABpBCqhA9EuxJaQWDQg7295H4hBphv3IZg0boBKuwYpt4YXp6MZ5AmZQnU/tyMTlRpaSejg==
+  dependencies:
+    call-bind-apply-helpers "^1.0.2"
+    get-intrinsic "^1.3.0"
 
 callsites@^3.0.0:
   version "3.1.0"
@@ -466,12 +471,12 @@ cypress-file-upload@^5.0.8:
   resolved "https://registry.yarnpkg.com/cypress-file-upload/-/cypress-file-upload-5.0.8.tgz#d8824cbeaab798e44be8009769f9a6c9daa1b4a1"
   integrity sha512-+8VzNabRk3zG6x8f8BWArF/xA/W0VK4IZNx3MV0jFWrJS/qKn8eHfa5nU73P9fOQAgwHFJx7zjg4lwOnljMO8g==
 
-cypress@14.2.0:
-  version "14.2.0"
-  resolved "https://registry.yarnpkg.com/cypress/-/cypress-14.2.0.tgz#cd1a846385d4aae13b009dcaa2d88f5156cafcb1"
-  integrity sha512-u7fuc9JEpSYLOdu8mzZDZ/JWsHUzR5pc8i1TeSqMz/bafXp+6IweMAeyphsEJ6/13qbB6nwTEY1m+GUAp6GqCQ==
+cypress@14.2.1:
+  version "14.2.1"
+  resolved "https://registry.yarnpkg.com/cypress/-/cypress-14.2.1.tgz#2628696588d3d3961bf0ea0ad87baeb359790dcd"
+  integrity sha512-5xd0E7fUp0pjjib1D7ljkmCwFDgMkWuW06jWiz8dKrI7MNRrDo0C65i4Sh+oZ9YHjMHZRJBR0XZk1DfekOhOUw==
   dependencies:
-    "@cypress/request" "^3.0.7"
+    "@cypress/request" "^3.0.8"
     "@cypress/xvfb" "^1.2.4"
     "@types/sinonjs__fake-timers" "8.1.1"
     "@types/sizzle" "^2.3.2"
@@ -508,7 +513,7 @@ cypress@14.2.0:
     process "^0.11.10"
     proxy-from-env "1.0.0"
     request-progress "^3.0.0"
-    semver "^7.5.3"
+    semver "^7.7.1"
     supports-color "^8.1.1"
     tmp "~0.2.3"
     tree-kill "1.2.2"
@@ -546,20 +551,20 @@ deep-is@^0.1.3:
   resolved "https://registry.yarnpkg.com/deep-is/-/deep-is-0.1.3.tgz"
   integrity sha1-s2nW+128E+7PUk+RsHD+7cNXzzQ=
 
-define-data-property@^1.1.4:
-  version "1.1.4"
-  resolved "https://registry.yarnpkg.com/define-data-property/-/define-data-property-1.1.4.tgz#894dc141bb7d3060ae4366f6a0107e68fbe48c5e"
-  integrity sha512-rBMvIzlpA8v6E+SJZoo++HAYqsLrkg7MSfIinMPFhmkorw7X+dOXVJQs+QT69zGkzMyfDnIMN2Wid1+NbL3T+A==
-  dependencies:
-    es-define-property "^1.0.0"
-    es-errors "^1.3.0"
-    gopd "^1.0.1"
-
 delayed-stream@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/delayed-stream/-/delayed-stream-1.0.0.tgz"
   integrity sha1-3zrhmayt+31ECqrgsp4icrJOxhk=
 
+dunder-proto@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/dunder-proto/-/dunder-proto-1.0.1.tgz#d7ae667e1dc83482f8b70fd0f6eefc50da30f58a"
+  integrity sha512-KIN/nDJBQRcXw0MLVhZE9iQHmG68qAVIBg9CqmUYjmQIhgij9U5MFvrqkUL5FbtyyzZuOeOt0zdeRe4UY7ct+A==
+  dependencies:
+    call-bind-apply-helpers "^1.0.1"
+    es-errors "^1.3.0"
+    gopd "^1.2.0"
+
 ecc-jsbn@~0.1.1:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/ecc-jsbn/-/ecc-jsbn-0.1.2.tgz"
@@ -587,18 +592,23 @@ enquirer@^2.3.6:
   dependencies:
     ansi-colors "^4.1.1"
 
-es-define-property@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/es-define-property/-/es-define-property-1.0.0.tgz#c7faefbdff8b2696cf5f46921edfb77cc4ba3845"
-  integrity sha512-jxayLKShrEqqzJ0eumQbVhTYQM27CfT1T35+gCgDFoL82JLsXqTJ76zv6A0YLOgEnLUMvLzsDsGIrl8NFpT2gQ==
-  dependencies:
-    get-intrinsic "^1.2.4"
+es-define-property@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/es-define-property/-/es-define-property-1.0.1.tgz#983eb2f9a6724e9303f61addf011c72e09e0b0fa"
+  integrity sha512-e3nRfgfUZ4rNGL232gUgX06QNyyez04KdjFrF+LTRoOXmrOgFKDg4BCdsjW8EnT69eqdYGmRpJwiPVYNrCaW3g==
 
 es-errors@^1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/es-errors/-/es-errors-1.3.0.tgz#05f75a25dab98e4fb1dcd5e1472c0546d5057c8f"
   integrity sha512-Zf5H2Kxt2xjTvbJvP2ZWLEICxA6j+hAmMzIlypy4xcBg1vKVnx89Wy0GbS+kf5cwCVFFzdCFh2XSCFNULS6csw==
 
+es-object-atoms@^1.0.0, es-object-atoms@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/es-object-atoms/-/es-object-atoms-1.1.1.tgz#1c4f2c4837327597ce69d2ca190a7fdd172338c1"
+  integrity sha512-FGgH2h8zKNim9ljj7dankFPcICIK9Cp5bm+c2gQSYePhpaG5+esrLODihIorn+Pe6FGJzWhXQotPv73jTaldXA==
+  dependencies:
+    es-errors "^1.3.0"
+
 escape-string-regexp@^1.0.5:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz"
@@ -857,16 +867,29 @@ function-bind@^1.1.2:
   resolved "https://registry.yarnpkg.com/function-bind/-/function-bind-1.1.2.tgz#2c02d864d97f3ea6c8830c464cbd11ab6eab7a1c"
   integrity sha512-7XHNxH7qX9xG5mIwxkhumTox/MIRNcOgDrxWsMt2pAr23WHp6MrRlN7FBSFpCpr+oVO0F744iUgR82nJMfG2SA==
 
-get-intrinsic@^1.1.3, get-intrinsic@^1.2.4:
-  version "1.2.4"
-  resolved "https://registry.yarnpkg.com/get-intrinsic/-/get-intrinsic-1.2.4.tgz#e385f5a4b5227d449c3eabbad05494ef0abbeadd"
-  integrity sha512-5uYhsJH8VJBTv7oslg4BznJYhDoRI6waYCxMmCdnTrcCrHA/fCFKoTFz2JKKE0HdDFUF7/oQuhzumXJK7paBRQ==
+get-intrinsic@^1.2.5, get-intrinsic@^1.3.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/get-intrinsic/-/get-intrinsic-1.3.0.tgz#743f0e3b6964a93a5491ed1bffaae054d7f98d01"
+  integrity sha512-9fSjSaos/fRIVIp+xSJlE6lfwhES7LNtKaCBIamHsjr2na1BiABJPo0mOjjz8GJDURarmCPGqaiVg5mfjb98CQ==
   dependencies:
+    call-bind-apply-helpers "^1.0.2"
+    es-define-property "^1.0.1"
     es-errors "^1.3.0"
+    es-object-atoms "^1.1.1"
     function-bind "^1.1.2"
-    has-proto "^1.0.1"
-    has-symbols "^1.0.3"
-    hasown "^2.0.0"
+    get-proto "^1.0.1"
+    gopd "^1.2.0"
+    has-symbols "^1.1.0"
+    hasown "^2.0.2"
+    math-intrinsics "^1.1.0"
+
+get-proto@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/get-proto/-/get-proto-1.0.1.tgz#150b3f2743869ef3e851ec0c49d15b1d14d00ee1"
+  integrity sha512-sTSfBjoXBp89JvIKIefqw7U2CCebsc74kiY6awiGogKtoSGbgjYE/G/+l9sF3MWFPNc9IcoOC4ODfKHfxFmp0g==
+  dependencies:
+    dunder-proto "^1.0.1"
+    es-object-atoms "^1.0.0"
 
 get-stream@^5.0.0, get-stream@^5.1.0:
   version "5.2.0"
@@ -913,12 +936,10 @@ globals@^15.11.0:
   resolved "https://registry.yarnpkg.com/globals/-/globals-15.11.0.tgz#b96ed4c6998540c6fb824b24b5499216d2438d6e"
   integrity sha512-yeyNSjdbyVaWurlwCpcA6XNBrHTMIeDdj0/hnvX/OLJ9ekOXYbLsLinH/MucQyGvNnXhidTdNhTtJaffL2sMfw==
 
-gopd@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/gopd/-/gopd-1.0.1.tgz#29ff76de69dac7489b7c0918a5788e56477c332c"
-  integrity sha512-d65bNlIadxvpb/A2abVdlqKqV563juRnZ1Wtk6s1sIR8uNsXR70xqIzVqxVf1eTqDunwT2MkczEeaezCKTZhwA==
-  dependencies:
-    get-intrinsic "^1.1.3"
+gopd@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/gopd/-/gopd-1.2.0.tgz#89f56b8217bdbc8802bd299df6d7f1081d7e51a1"
+  integrity sha512-ZUKRh6/kUFoAiTAtTYPZJ3hw9wNxx+BIBOijnlG9PnrJsCcSjs1wyyD6vJpaYtgnzDrKYRSqf3OO6Rfa93xsRg==
 
 graceful-fs@^4.1.6, graceful-fs@^4.2.0:
   version "4.2.6"
@@ -930,24 +951,12 @@ has-flag@^4.0.0:
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-4.0.0.tgz"
   integrity sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ==
 
-has-property-descriptors@^1.0.2:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/has-property-descriptors/-/has-property-descriptors-1.0.2.tgz#963ed7d071dc7bf5f084c5bfbe0d1b6222586854"
-  integrity sha512-55JNKuIW+vq4Ke1BjOTjM2YctQIvCT7GFzHwmfZPGo5wnrgkid0YQtnAleFSqumZm4az3n2BS+erby5ipJdgrg==
-  dependencies:
-    es-define-property "^1.0.0"
-
-has-proto@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/has-proto/-/has-proto-1.0.1.tgz#1885c1305538958aff469fef37937c22795408e0"
-  integrity sha512-7qE+iP+O+bgF9clE5+UoBFzE65mlBiVj3tKCrlNQ0Ogwm0BjpT/gK4SlLYDMybDh5I3TCTKnPPa0oMG7JDYrhg==
-
-has-symbols@^1.0.3:
-  version "1.0.3"
-  resolved "https://registry.yarnpkg.com/has-symbols/-/has-symbols-1.0.3.tgz#bb7b2c4349251dce87b125f7bdf874aa7c8b39f8"
-  integrity sha512-l3LCuF6MgDNwTDKkdYGEihYjt5pRPbEg46rtlmnSPlUbgmB8LOIrKJbYYFBSbnPaJexMKtiPO8hmeRjRz2Td+A==
+has-symbols@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/has-symbols/-/has-symbols-1.1.0.tgz#fc9c6a783a084951d0b971fe1018de813707a338"
+  integrity sha512-1cDNdwJ2Jaohmb3sg4OmKaMBwuC48sYni5HUw2DvsC8LjGTLK9h+eb1X6RyuOHe4hT0ULCW68iomhjUoKUqlPQ==
 
-hasown@^2.0.0:
+hasown@^2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/hasown/-/hasown-2.0.2.tgz#003eaf91be7adc372e84ec59dc37252cedb80003"
   integrity sha512-0hJU9SCPvmMzIBdZFqNPXWa6dqh7WdH0cII9y+CyS8rG3nL48Bclra9HmKhVVUHyPWNH5Y7xDwAB7bfgSjkUMQ==
@@ -1179,12 +1188,10 @@ log-update@^4.0.0:
     slice-ansi "^4.0.0"
     wrap-ansi "^6.2.0"
 
-lru-cache@^6.0.0:
-  version "6.0.0"
-  resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-6.0.0.tgz#6d6fe6570ebd96aaf90fcad1dafa3b2566db3a94"
-  integrity sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==
-  dependencies:
-    yallist "^4.0.0"
+math-intrinsics@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/math-intrinsics/-/math-intrinsics-1.1.0.tgz#a0dd74be81e2aa5c2f27e65ce283605ee4e2b7f9"
+  integrity sha512-/IXtbwEk5HTPyEwyKX6hGkYXxM9nbj64B+ilVJnC/R6B0pH5G4V3b0pVbL7DBj4tkhBAppbQUlf6F6Xl9LHu1g==
 
 merge-stream@^2.0.0:
   version "2.0.0"
@@ -1237,10 +1244,10 @@ npm-run-path@^4.0.0:
   dependencies:
     path-key "^3.0.0"
 
-object-inspect@^1.13.1:
-  version "1.13.2"
-  resolved "https://registry.yarnpkg.com/object-inspect/-/object-inspect-1.13.2.tgz#dea0088467fb991e67af4058147a24824a3043ff"
-  integrity sha512-IRZSRuzJiynemAXPYtPe5BoI/RESNYR7TYm50MC5Mqbd3Jmw5y790sErYw3V6SryFJD64b74qQQs9wn5Bg/k3g==
+object-inspect@^1.13.3:
+  version "1.13.4"
+  resolved "https://registry.yarnpkg.com/object-inspect/-/object-inspect-1.13.4.tgz#8375265e21bc20d0fa582c22e1b13485d6e00213"
+  integrity sha512-W67iLl4J2EXEGTbfeHCffrjDfitvLANg0UlX3wFUUSTx92KXRFegMHUVgSqE+wvhAbi4WqjGg9czysTV2Epbew==
 
 once@^1.3.1, once@^1.4.0:
   version "1.4.0"
@@ -1364,12 +1371,12 @@ punycode@^2.1.0:
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.1.tgz"
   integrity sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==
 
-qs@6.13.1:
-  version "6.13.1"
-  resolved "https://registry.yarnpkg.com/qs/-/qs-6.13.1.tgz#3ce5fc72bd3a8171b85c99b93c65dd20b7d1b16e"
-  integrity sha512-EJPeIn0CYrGu+hli1xilKAPXODtJ12T0sP63Ijx2/khC2JtuaN3JyNIpvmnkmaEtha9ocbG4A4cMcr+TvqvwQg==
+qs@6.14.0:
+  version "6.14.0"
+  resolved "https://registry.yarnpkg.com/qs/-/qs-6.14.0.tgz#c63fa40680d2c5c941412a0e899c89af60c0a930"
+  integrity sha512-YWWTjgABSKcvs/nWBi9PycY/JiPJqOD4JA6o9Sej2AtvSGarXxKC3OQSk4pAarbdQlKAh5D4FCQkJNkW+GAn3w==
   dependencies:
-    side-channel "^1.0.6"
+    side-channel "^1.1.0"
 
 request-progress@^3.0.0:
   version "3.0.0"
@@ -1408,24 +1415,10 @@ safer-buffer@^2.0.2, safer-buffer@^2.1.0, safer-buffer@~2.1.0:
   resolved "https://registry.yarnpkg.com/safer-buffer/-/safer-buffer-2.1.2.tgz"
   integrity sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==
 
-semver@^7.5.3:
-  version "7.5.3"
-  resolved "https://registry.yarnpkg.com/semver/-/semver-7.5.3.tgz#161ce8c2c6b4b3bdca6caadc9fa3317a4c4fe88e"
-  integrity sha512-QBlUtyVk/5EeHbi7X0fw6liDZc7BBmEaSYn01fMU1OUYbf6GPsbTtd8WmnqbI20SeycoHSeiybkE/q1Q+qlThQ==
-  dependencies:
-    lru-cache "^6.0.0"
-
-set-function-length@^1.2.1:
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/set-function-length/-/set-function-length-1.2.2.tgz#aac72314198eaed975cf77b2c3b6b880695e5449"
-  integrity sha512-pgRc4hJ4/sNjWCSS9AmnS40x3bNMDTknHgL5UaMBTMyJnU90EgWh1Rz+MC9eFu4BuN/UwZjKQuY/1v3rM7HMfg==
-  dependencies:
-    define-data-property "^1.1.4"
-    es-errors "^1.3.0"
-    function-bind "^1.1.2"
-    get-intrinsic "^1.2.4"
-    gopd "^1.0.1"
-    has-property-descriptors "^1.0.2"
+semver@^7.7.1:
+  version "7.7.1"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-7.7.1.tgz#abd5098d82b18c6c81f6074ff2647fd3e7220c9f"
+  integrity sha512-hlq8tAfn0m/61p4BVRcPzIGr6LKiMwo4VM6dGi6pt4qcRkmNzTcWq6eCEjEh+qXjkMDvPlOFFSGwQjoEa6gyMA==
 
 shebang-command@^2.0.0:
   version "2.0.0"
@@ -1439,15 +1432,45 @@ shebang-regex@^3.0.0:
   resolved "https://registry.yarnpkg.com/shebang-regex/-/shebang-regex-3.0.0.tgz"
   integrity sha512-7++dFhtcx3353uBaq8DDR4NuxBetBzC7ZQOhmTQInHEd6bSrXdiEyzCvG07Z44UYdLShWUyXt5M/yhz8ekcb1A==
 
-side-channel@^1.0.6:
-  version "1.0.6"
-  resolved "https://registry.yarnpkg.com/side-channel/-/side-channel-1.0.6.tgz#abd25fb7cd24baf45466406b1096b7831c9215f2"
-  integrity sha512-fDW/EZ6Q9RiO8eFG8Hj+7u/oW+XrPTIChwCOM2+th2A6OblDtYYIpve9m+KvI9Z4C9qSEXlaGR6bTEYHReuglA==
+side-channel-list@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/side-channel-list/-/side-channel-list-1.0.0.tgz#10cb5984263115d3b7a0e336591e290a830af8ad"
+  integrity sha512-FCLHtRD/gnpCiCHEiJLOwdmFP+wzCmDEkc9y7NsYxeF4u7Btsn1ZuwgwJGxImImHicJArLP4R0yX4c2KCrMrTA==
   dependencies:
-    call-bind "^1.0.7"
     es-errors "^1.3.0"
-    get-intrinsic "^1.2.4"
-    object-inspect "^1.13.1"
+    object-inspect "^1.13.3"
+
+side-channel-map@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/side-channel-map/-/side-channel-map-1.0.1.tgz#d6bb6b37902c6fef5174e5f533fab4c732a26f42"
+  integrity sha512-VCjCNfgMsby3tTdo02nbjtM/ewra6jPHmpThenkTYh8pG9ucZ/1P8So4u4FGBek/BjpOVsDCMoLA/iuBKIFXRA==
+  dependencies:
+    call-bound "^1.0.2"
+    es-errors "^1.3.0"
+    get-intrinsic "^1.2.5"
+    object-inspect "^1.13.3"
+
+side-channel-weakmap@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/side-channel-weakmap/-/side-channel-weakmap-1.0.2.tgz#11dda19d5368e40ce9ec2bdc1fb0ecbc0790ecea"
+  integrity sha512-WPS/HvHQTYnHisLo9McqBHOJk2FkHO/tlpvldyrnem4aeQp4hai3gythswg6p01oSoTl58rcpiFAjF2br2Ak2A==
+  dependencies:
+    call-bound "^1.0.2"
+    es-errors "^1.3.0"
+    get-intrinsic "^1.2.5"
+    object-inspect "^1.13.3"
+    side-channel-map "^1.0.1"
+
+side-channel@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/side-channel/-/side-channel-1.1.0.tgz#c3fcff9c4da932784873335ec9765fa94ff66bc9"
+  integrity sha512-ZX99e6tRweoUXqR+VBrslhda51Nh5MTQwou5tnUDgbtyM0dBgmhEDtWGP/xbKn6hqfPRHujUNwz5fy/wbbhnpw==
+  dependencies:
+    es-errors "^1.3.0"
+    object-inspect "^1.13.3"
+    side-channel-list "^1.0.0"
+    side-channel-map "^1.0.1"
+    side-channel-weakmap "^1.0.2"
 
 signal-exit@^3.0.2:
   version "3.0.3"
@@ -1670,11 +1693,6 @@ wrappy@1:
   resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz"
   integrity sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=
 
-yallist@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/yallist/-/yallist-4.0.0.tgz#9bb92790d9c0effec63be73519e11a35019a3a72"
-  integrity sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==
-
 yauzl@^2.10.0:
   version "2.10.0"
   resolved "https://registry.yarnpkg.com/yauzl/-/yauzl-2.10.0.tgz"
diff --git a/main/tests/server/src/com/google/refine/operations/row/RowAdditionOperationTests.java b/main/tests/server/src/com/google/refine/operations/row/RowAdditionOperationTests.java
index a9590fbfe..89a102579 100644
--- a/main/tests/server/src/com/google/refine/operations/row/RowAdditionOperationTests.java
+++ b/main/tests/server/src/com/google/refine/operations/row/RowAdditionOperationTests.java
@@ -30,6 +30,7 @@ package com.google.refine.operations.row;
 import static org.testng.Assert.assertEquals;
 
 import java.io.IOException;
+import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
@@ -45,7 +46,9 @@ import org.testng.annotations.BeforeTest;
 import org.testng.annotations.Test;
 
 import com.google.refine.RefineTest;
+import com.google.refine.model.Cell;
 import com.google.refine.model.ColumnsDiff;
+import com.google.refine.model.Project;
 import com.google.refine.model.Row;
 import com.google.refine.operations.OperationDescription;
 import com.google.refine.operations.OperationRegistry;
@@ -54,7 +57,8 @@ import com.google.refine.util.TestUtils;
 
 public class RowAdditionOperationTests extends RefineTest {
 
-    String json;
+    String legacyJson;
+    String newJson;
     RowAdditionOperation op;
 
     @BeforeSuite
@@ -64,9 +68,17 @@ public class RowAdditionOperationTests extends RefineTest {
 
     @BeforeMethod
     public void setUp() {
-        json = "{"
+        // JSON serialization before 3.9.3, which might contain some corrupted cells because of mutability issues,
+        // manifesting themselves in https://github.com/OpenRefine/OpenRefine/issues/7245
+        legacyJson = "{"
                 + "\"op\":\"core/row-addition\","
-                + "\"rows\":[{\"starred\":false,\"flagged\":false,\"cells\":[]},{\"starred\":false,\"flagged\":false,\"cells\":[]}],"
+                + "\"rows\":[{\"starred\":false,\"flagged\":false,\"cells\":[{\"foo\":3}]},{\"starred\":false,\"flagged\":false,\"cells\":[]}],"
+                + "\"index\":0,"
+                + "\"description\":" + new TextNode(OperationDescription.row_addition_brief()).toString() + "}";
+        // JSON serialization from 3.9.3 on
+        newJson = "{"
+                + "\"op\":\"core/row-addition\","
+                + "\"addedRows\":[{\"starred\":false,\"flagged\":false,\"cells\":[]},{\"starred\":false,\"flagged\":false,\"cells\":[]}],"
                 + "\"index\":0,"
                 + "\"description\":" + new TextNode(OperationDescription.row_addition_brief()).toString() + "}";
 
@@ -85,15 +97,21 @@ public class RowAdditionOperationTests extends RefineTest {
     }
 
     @Test
-    public void testDeserialization() throws IOException {
-        RowAdditionOperation op = ParsingUtilities.mapper.readValue(json, RowAdditionOperation.class);
-        TestUtils.isSerializedTo(op, json);
+    public void testLegacyDeserialization() throws IOException {
+        RowAdditionOperation op = ParsingUtilities.mapper.readValue(legacyJson, RowAdditionOperation.class);
+        TestUtils.isSerializedTo(op, newJson);
+    }
+
+    @Test
+    public void testNewDeserialization() throws IOException {
+        RowAdditionOperation op = ParsingUtilities.mapper.readValue(newJson, RowAdditionOperation.class);
+        TestUtils.isSerializedTo(op, newJson);
     }
 
     @Test
     public void testSerialization() throws JsonProcessingException {
         String serializedObject = ParsingUtilities.mapper.writeValueAsString(op);
-        assertEquals(serializedObject, json);
+        assertEquals(serializedObject, newJson);
     }
 
     @Test
@@ -106,7 +124,36 @@ public class RowAdditionOperationTests extends RefineTest {
     public void testRename() {
         RowAdditionOperation renamed = op.renameColumns(Map.of("foo", "bar"));
 
-        TestUtils.isSerializedTo(renamed, json);
+        TestUtils.isSerializedTo(renamed, newJson);
+    }
+
+    // regression test for https://github.com/OpenRefine/OpenRefine/issues/7245
+    @Test
+    public void mutabilityBugRegressionTest() throws Exception {
+        Project project = createProject(new String[] { "foo", "bar" },
+                new Serializable[][] {
+                        { "a", "b " },
+                        { null, "c" },
+                });
+
+        RowAdditionOperation op = ParsingUtilities.mapper.readValue(newJson, RowAdditionOperation.class);
+
+        // add the two rows at the beginning
+        runOperation(op, project);
+        // and then edit a cell in the first row
+        project.rows.get(0).setCell(0, new Cell("hello", null));
+
+        Project expected = createProject(new String[] { "foo", "bar" },
+                new Serializable[][] {
+                        { "hello", null },
+                        { null, null },
+                        { "a", "b " },
+                        { null, "c" },
+                });
+        assertProjectEquals(project, expected);
+
+        // the operation metadata is still unchanged
+        TestUtils.isSerializedTo(op, newJson);
     }
 
 }
diff --git a/modules/core/src/test/java/com/google/refine/model/CellTests.java b/modules/core/src/test/java/com/google/refine/model/CellTests.java
index 1fecf9e1e..b2048df01 100644
--- a/modules/core/src/test/java/com/google/refine/model/CellTests.java
+++ b/modules/core/src/test/java/com/google/refine/model/CellTests.java
@@ -184,4 +184,17 @@ public class CellTests {
         assertNotEquals(c1, "foo");
         assertEquals(c1.hashCode(), new Cell("foo", recon).hashCode());
     }
+
+    @Test
+    public void testDeepCopy() {
+        Recon recon = mock(Recon.class);
+        Recon reconDup = mock(Recon.class);
+        when(recon.dup()).thenReturn(reconDup);
+
+        Cell c1 = new Cell("foo", recon);
+        Cell c2 = c1.deepCopy();
+
+        assertEquals(c2.value, "foo");
+        assertEquals(c2.recon, reconDup);
+    }
 }
diff --git a/modules/core/src/test/java/com/google/refine/model/RowTests.java b/modules/core/src/test/java/com/google/refine/model/RowTests.java
index 8337acd1b..c37662ef6 100644
--- a/modules/core/src/test/java/com/google/refine/model/RowTests.java
+++ b/modules/core/src/test/java/com/google/refine/model/RowTests.java
@@ -35,6 +35,9 @@ package com.google.refine.model;
 
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
+import static org.testng.Assert.assertEquals;
+import static org.testng.Assert.assertFalse;
+import static org.testng.Assert.assertTrue;
 
 import java.io.StringWriter;
 import java.util.Properties;
@@ -187,4 +190,18 @@ public class RowTests extends RefineTest {
         Assert.assertTrue((Boolean) row.getField("starred", options));
     }
 
+    @Test
+    public void deepCopy() {
+        Row row = new Row(1);
+        row.flagged = true;
+        row.setCell(0, new Cell("original value", null));
+
+        Row copied = row.deepCopy();
+        row.starred = true;
+        row.setCell(0, new Cell("new value", null));
+
+        assertTrue(copied.flagged);
+        assertFalse(copied.starred);
+        assertEquals(copied.cells.get(0).value, "original value");
+    }
 }
diff --git a/modules/core/src/test/java/com/google/refine/model/changes/RowAdditionChangeTests.java b/modules/core/src/test/java/com/google/refine/model/changes/RowAdditionChangeTests.java
index b742aa489..3d6a48ffd 100644
--- a/modules/core/src/test/java/com/google/refine/model/changes/RowAdditionChangeTests.java
+++ b/modules/core/src/test/java/com/google/refine/model/changes/RowAdditionChangeTests.java
@@ -29,7 +29,7 @@ package com.google.refine.model.changes;
 
 import static org.testng.Assert.assertEquals;
 import static org.testng.Assert.assertNotNull;
-import static org.testng.Assert.assertSame;
+import static org.testng.Assert.assertNotSame;
 import static org.testng.Assert.assertTrue;
 
 import java.io.IOException;
@@ -107,13 +107,18 @@ public class RowAdditionChangeTests extends RefineTest {
     }
 
     @Test
-    // After prepend apply, project's new prepended rows are identical those passed to constructor
+    // After prepend apply, project's new prepended rows are equal those passed to constructor
+    // but not identical, because otherwise modifying the row will change the operation's metadata.
+    // See https://github.com/OpenRefine/OpenRefine/issues/7245
     public void testPrependApplyRowIdentity() {
         change.apply(project);
         for (int i = insertionIndex; i < newRows.size(); i++) {
             Row actual = project.rows.get(i);
             Row expected = newRows.get(i);
-            assertSame(actual, expected);
+            assertNotSame(actual, expected);
+            assertEquals(actual.flagged, expected.flagged);
+            assertEquals(actual.starred, expected.starred);
+            assertEquals(actual.cells, expected.cells);
         }
     }
 
@@ -205,6 +210,8 @@ public class RowAdditionChangeTests extends RefineTest {
 
     @Test
     // After append apply, project's new append rows are identical those passed to constructor
+    // but not identical, because otherwise modifying the row will change the operation's metadata.
+    // See https://github.com/OpenRefine/OpenRefine/issues/7245
     public void testAppendApplyRowIdentity() {
         insertionIndex = project.rows.size();
         change = new RowAdditionChange(newRows, insertionIndex);
@@ -213,7 +220,10 @@ public class RowAdditionChangeTests extends RefineTest {
         for (int i = insertionIndex; i < newRows.size(); i++) {
             Row actual = project.rows.get(insertionIndex + i);
             Row expected = newRows.get(i);
-            assertSame(actual, expected);
+            assertNotSame(actual, expected);
+            assertEquals(actual.flagged, expected.flagged);
+            assertEquals(actual.starred, expected.starred);
+            assertEquals(actual.cells, expected.cells);
         }
     }