Bug: Perma Beta TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_urlbar_keyed_search.js | unexpected changed rect: ({x1:252, x2:291, y1:57, y2:66, w:40, h:10}), window width: 1280 - when Gecko merges to Beta on 2020-02-10
Status: VERIFIED
Priority: P1
Resolution: FIXED
Created: 2020-01-11 14:40:53+00:00
Resolved: 2020-09-01 09:15:51+00:00

Central as Beta simulation: https://treeherder.mozilla.org/#/jobs?repo=try&revision=291a9ff0d936e01cac4631a3846283cb97cb40ef&searchStr=windows%2C10%2Cx64%2Cdevedition%2Copt%2Cmochitests%2Ctest-windows10-64-devedition%2Fopt-mochitest-browser-chrome-e10s-2%2Cm%28bc2%29&selectedJob=284538744

Failure log: https://treeherder.mozilla.org/logviewer.html#/jobs?job_id=284538700&repo=try&lineNumber=2321

[task 2020-01-11T13:47:17.027Z] 13:47:17     INFO - TEST-PASS | browser/base/content/test/performance/browser_urlbar_keyed_search.js | 0 unexpected reflows - true == true - 
[task 2020-01-11T13:47:17.027Z] 13:47:17     INFO - comparing 7 frames
[task 2020-01-11T13:47:17.027Z] 13:47:17     INFO - Buffered messages finished
[task 2020-01-11T13:47:17.027Z] 13:47:17     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_urlbar_keyed_search.js | unexpected changed rect: ({x1:252, x2:291, y1:57, y2:66, w:40, h:10}), window width: 1280 - 
[task 2020-01-11T13:47:17.027Z] 13:47:17     INFO - Stack trace:
[task 2020-01-11T13:47:17.027Z] 13:47:17     INFO - chrome://mochikit/content/browser-test.js:test_ok:1292
[task 2020-01-11T13:47:17.027Z] 13:47:17     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/head.js:reportUnexpectedFlicker/rects<:623
[task 2020-01-11T13:47:17.027Z] 13:47:17     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/head.js:reportUnexpectedFlicker:614
[task 2020-01-11T13:47:17.027Z] 13:47:17     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/head.js:withPerfObserver:683
[task 2020-01-11T13:47:17.027Z] 13:47:17     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/head.js:runUrlbarTest:819
[task 2020-01-11T13:47:17.027Z] 13:47:17     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/browser_urlbar_keyed_search.js:quantumbar:22
[task 2020-01-11T13:47:17.027Z] 13:47:17     INFO - chrome://mochikit/content/browser-test.js:Tester_execTest/<:1062
[task 2020-01-11T13:47:17.028Z] 13:47:17     INFO - chrome://mochikit/content/browser-test.js:Tester_execTest:1097
[task 2020-01-11T13:47:17.028Z] 13:47:17     INFO - chrome://mochikit/content/browser-test.js:nextTest/<:925
[task 2020-01-11T13:47:17.028Z] 13:47:17     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:SimpleTest.waitForFocus/waitForFocusInner/focusedOrLoaded/<:808
[task 2020-01-11T13:47:17.030Z] 13:47:17     INFO - data:image/png;base64
[task 2020-01-11T13:47:17.041Z] 13:47:17     INFO - data:image/png;base64
[task 2020-01-11T13:47:17.186Z] 13:47:17     INFO - Not taking screenshot here: see the one that was previously logged
[task 2020-01-11T13:47:17.186Z] 13:47:17     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_urlbar_keyed_search.js | should have 0 unknown flickering areas - Got 1, expected 0
[task 2020-01-11T13:47:17.186Z] 13:47:17     INFO - Stack trace:
[task 2020-01-11T13:47:17.186Z] 13:47:17     INFO - chrome://mochikit/content/browser-test.js:test_is:1320
[task 2020-01-11T13:47:17.186Z] 13:47:17     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/head.js:reportUnexpectedFlicker:640
[task 2020-01-11T13:47:17.186Z] 13:47:17     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/head.js:withPerfObserver:683
[task 2020-01-11T13:47:17.186Z] 13:47:17     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/head.js:runUrlbarTest:819
[task 2020-01-11T13:47:17.186Z] 13:47:17     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/browser_urlbar_keyed_search.js:quantumbar:22
[task 2020-01-11T13:47:17.186Z] 13:47:17     INFO - chrome://mochikit/content/browser-test.js:Tester_execTest/<:1062
[task 2020-01-11T13:47:17.186Z] 13:47:17     INFO - chrome://mochikit/content/browser-test.js:Tester_execTest:1097
[task 2020-01-11T13:47:17.186Z] 13:47:17     INFO - chrome://mochikit/content/browser-test.js:nextTest/<:925
[task 2020-01-11T13:47:17.186Z] 13:47:17     INFO - chrome://mochikit/content/tests/SimpleTest/SimpleTest.js:SimpleTest.waitForFocus/waitForFocusInner/focusedOrLoaded/<:808
[task 2020-01-11T13:47:17.186Z] 13:47:17     INFO - Second opening
[task 2020-01-11T13:47:18.935Z] 13:47:18     INFO - TEST-PASS | browser/base/content/test/performance/browser_urlbar_keyed_search.js | 0 unexpected reflows - true == true - 

Harry,
Could this be caused by the changes in Bug 1601334?