Bug: Intermittent browser/base/content/test/performance/browser_tabopen_squeeze.js | unexpected changed rect: ({x1:17, x2:30, y1:66, y2:78, w:14, h:13}), window width: 1280 -
Status: RESOLVED
Priority: P5
Resolution: DUPLICATE
Created: 2021-11-28 01:33:01+00:00
Resolved: 2022-07-25 23:07:10+00:00

**Filed by:** smolnar [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=359455452&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/WMK7CEdHT7qXWt-xArfFWw/runs/0/artifacts/public/logs/live_backing.log

---
```
INFO - TEST-PASS | browser/base/content/test/performance/browser_tabopen_squeeze.js | 0 unexpected reflows - true == true - 
[task 2021-11-28T00:41:00.874Z] 00:41:00     INFO - comparing 7 frames
[task 2021-11-28T00:41:00.874Z] 00:41:00     INFO - Buffered messages finished
[task 2021-11-28T00:41:00.874Z] 00:41:00     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_tabopen_squeeze.js | unexpected changed rect: ({x1:17, x2:30, y1:66, y2:78, w:14, h:13}), window width: 1280 - 
[task 2021-11-28T00:41:00.874Z] 00:41:00     INFO - Stack trace:
[task 2021-11-28T00:41:00.875Z] 00:41:00     INFO - chrome://mochikit/content/browser-test.js:test_ok:1336
[task 2021-11-28T00:41:00.875Z] 00:41:00     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/head.js:reportUnexpectedFlicker/rects<:633
[task 2021-11-28T00:41:00.875Z] 00:41:00     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/head.js:reportUnexpectedFlicker:624
[task 2021-11-28T00:41:00.875Z] 00:41:00     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/head.js:withPerfObserver:693
[task 2021-11-28T00:41:00.875Z] 00:41:00     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-11-28T00:41:00.876Z] 00:41:00     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_tabopen_squeeze.js | unexpected changed rect: ({x1:53, x2:66, y1:66, y2:78, w:14, h:13}), window width: 1280 - 
[task 2021-11-28T00:41:00.876Z] 00:41:00     INFO - Stack trace:
[task 2021-11-28T00:41:00.876Z] 00:41:00     INFO - chrome://mochikit/content/browser-test.js:test_ok:1336
[task 2021-11-28T00:41:00.876Z] 00:41:00     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/head.js:reportUnexpectedFlicker/rects<:633
[task 2021-11-28T00:41:00.877Z] 00:41:00     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/head.js:reportUnexpectedFlicker:624
[task 2021-11-28T00:41:00.877Z] 00:41:00     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/head.js:withPerfObserver:693
[task 2021-11-28T00:41:00.877Z] 00:41:00     INFO - Not taking screenshot here: see the one that was previously logged
[task 2021-11-28T00:41:00.878Z] 00:41:00     INFO - TEST-UNEXPECTED-FAIL | browser/base/content/test/performance/browser_tabopen_squeeze.js | unexpected changed rect: ({x1:89, x2:102, y1:66, y2:79, w:14, h:14}), window width: 1280 - 
[task 2021-11-28T00:41:00.878Z] 00:41:00     INFO - Stack trace:
[task 2021-11-28T00:41:00.878Z] 00:41:00     INFO - chrome://mochikit/content/browser-test.js:test_ok:1336
[task 2021-11-28T00:41:00.878Z] 00:41:00     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/head.js:reportUnexpectedFlicker/rects<:633
[task 2021-11-28T00:41:00.878Z] 00:41:00     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/head.js:reportUnexpectedFlicker:624
[task 2021-11-28T00:41:00.878Z] 00:41:00     INFO - chrome://mochitests/content/browser/browser/base/content/test/performance/head.js:withPerfObserver:693
[task 2021-11-28T00:41:00.879Z] 00:41:00     INFO - TEST-FAIL | browser/base/content/test/performance/browser_tabopen_squeeze.js | the urlbar placeolder moves up and down by a few pixels, ({x1:280, x2:318, y1:68, y2:77, w:39, h:10}), window width: 1280 - 
<...>
```