Bug: High frequency browser/base/content/test/performance/browser_appmenu.js | single tracking bug
Status: RESOLVED
Priority: P5
Resolution: FIXED
Created: 2025-01-27 08:05:42+00:00
Resolved: 2025-03-04 02:37:39+00:00

**Filed by:** agoloman [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=491912787&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/YQG85BbBTIC7xICQTrrWcw/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2025-01-27T07:19:09.063Z] 07:19:09     INFO - TEST-PASS | browser/base/content/test/performance/browser_appmenu.js | 0 unexpected reflows - true == true - 
[task 2025-01-27T07:19:09.063Z] 07:19:09     INFO - comparing 4 frames
[task 2025-01-27T07:19:09.064Z] 07:19:09     INFO - Buffered messages finished
[task 2025-01-27T07:19:09.065Z] 07:19:09     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_appmenu.js | unexpected 1 changed rects: ({x1:222, x2:235, y1:58, y2:71, w:14, h:14}), window width: 1280 - 
[task 2025-01-27T07:19:09.065Z] 07:19:09     INFO - Stack trace:
[task 2025-01-27T07:19:09.065Z] 07:19:09     INFO - chrome://mochikit/content/browser-test.js:test_ok:1599
[task 2025-01-27T07:19:09.065Z] 07:19:09     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/head.js:reportUnexpectedFlicker:664
[task 2025-01-27T07:19:09.065Z] 07:19:09     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/head.js:withPerfObserver:723
[task 2025-01-27T07:19:09.065Z] 07:19:09     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/browser_appmenu.js:null:59
[task 2025-01-27T07:19:09.065Z] 07:19:09     INFO - chrome://mochikit/content/browser-test.js:handleTask:1147
[task 2025-01-27T07:19:09.065Z] 07:19:09     INFO - chrome://mochikit/content/browser-test.js:_runTaskBasedTest:1219
[task 2025-01-27T07:19:09.065Z] 07:19:09     INFO - chrome://mochikit/content/browser-test.js:Tester_execTest:1360
[task 2025-01-27T07:19:09.065Z] 07:19:09     INFO - chrome://mochikit/content/browser-test.js:nextTest/<:1136
[task 2025-01-27T07:19:09.066Z] 07:19:09     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:SimpleTest.waitForFocus/<:1058
[task 2025-01-27T07:19:09.122Z] 07:19:09     INFO - data:image/png;base64 <...>
[task 2025-01-27T07:19:09.168Z] 07:19:09     INFO - Not taking screenshot here: see the one that was previously logged
[task 2025-01-27T07:19:09.169Z] 07:19:09     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_appmenu.js | unexpected 1 changed rects: ({x1:221, x2:236, y1:57, y2:72, w:16, h:16}), window width: 1280 - 
[task 2025-01-27T07:19:09.169Z] 07:19:09     INFO - Stack trace:
[task 2025-01-27T07:19:09.169Z] 07:19:09     INFO - chrome://mochikit/content/browser-test.js:test_ok:1599
[task 2025-01-27T07:19:09.169Z] 07:19:09     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/head.js:reportUnexpectedFlicker:664
[task 2025-01-27T07:19:09.169Z] 07:19:09     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/head.js:withPerfObserver:723
[task 2025-01-27T07:19:09.169Z] 07:19:09     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/browser_appmenu.js:null:59
[task 2025-01-27T07:19:09.170Z] 07:19:09     INFO - chrome://mochikit/content/browser-test.js:handleTask:1147
[task 2025-01-27T07:19:09.170Z] 07:19:09     INFO - chrome://mochikit/content/browser-test.js:_runTaskBasedTest:1219
[task 2025-01-27T07:19:09.170Z] 07:19:09     INFO - chrome://mochikit/content/browser-test.js:Tester_execTest:1360
[task 2025-01-27T07:19:09.170Z] 07:19:09     INFO - chrome://mochikit/content/browser-test.js:nextTest/<:1136
[task 2025-01-27T07:19:09.170Z] 07:19:09     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:SimpleTest.waitForFocus/<:1058
[task 2025-01-27T07:19:09.204Z] 07:19:09     INFO - data:image/png;base64 <...>
[task 2025-01-27T07:19:09.204Z] 07:19:09     INFO - Not taking screenshot here: see the one that was previously logged
[task 2025-01-27T07:19:09.205Z] 07:19:09     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_appmenu.js | should have 0 unknown flickering areas - Got 2, expected +0
[task 2025-01-27T07:19:09.205Z] 07:19:09     INFO - Stack trace:
[task 2025-01-27T07:19:09.205Z] 07:19:09     INFO - chrome://mochikit/content/browser-test.js:test_is:1627
[task 2025-01-27T07:19:09.205Z] 07:19:09     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/head.js:reportUnexpectedFlicker:680
[task 2025-01-27T07:19:09.206Z] 07:19:09     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/head.js:withPerfObserver:723
[task 2025-01-27T07:19:09.206Z] 07:19:09     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/browser_appmenu.js:null:59
[task 2025-01-27T07:19:09.206Z] 07:19:09     INFO - chrome://mochikit/content/browser-test.js:handleTask:1147
[task 2025-01-27T07:19:09.206Z] 07:19:09     INFO - chrome://mochikit/content/browser-test.js:_runTaskBasedTest:1219
[task 2025-01-27T07:19:09.206Z] 07:19:09     INFO - chrome://mochikit/content/browser-test.js:Tester_execTest:1360
[task 2025-01-27T07:19:09.206Z] 07:19:09     INFO - chrome://mochikit/content/browser-test.js:nextTest/<:1136
[task 2025-01-27T07:19:09.206Z] 07:19:09     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:SimpleTest.waitForFocus/<:1058
[task 2025-01-27T07:19:09.206Z] 07:19:09     INFO - Click appMenu-bookmarks-button
[task 2025-01-27T07:19:09.207Z] 07:19:09     INFO - Shown PanelUI-bookmarks
[task 2025-01-27T07:19:09.207Z] 07:19:09     INFO - Click appMenu-history-button
[task 2025-01-27T07:19:09.298Z] 07:19:09     INFO - Shown PanelUI-history
[task 2025-01-27T07:19:09.499Z] 07:19:09     INFO - Click appMenu-more-button2
[task 2025-01-27T07:19:09.731Z] 07:19:09     INFO - Shown appmenu-moreTools
[task 2025-01-27T07:19:09.937Z] 07:19:09     INFO - Click appMenu-help-button2
[task 2025-01-27T07:19:10.165Z] 07:19:10     INFO - Shown PanelUI-helpView
[task 2025-01-27T07:19:10.352Z] 07:19:10     INFO - TEST-PASS | browser/base/content/test/performance/browser_appmenu.js | The panel is open to begin with. - true == true - 
```