Bug: Intermittent browser/components/sidebar/tests/browser/browser_resize_sidebar.js | single tracking bug
Status: NEW
Priority: P5
Created: 2025-02-06 00:54:28+00:00
Resolved: 2025-03-03 22:38:46+00:00

**Filed by:** amarc [at] mozilla.com
**Parsed log:** https://treeherder.mozilla.org/logviewer?job_id=493532684&repo=autoland
**Full log:** https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/RKmwENz4Tuq8CMkLMCy4zQ/runs/0/artifacts/public/logs/live_backing.log

---
```
[task 2025-02-06T00:24:41.587Z] 00:24:41     INFO - TEST-START | browser/components/sidebar/tests/browser/browser_resize_sidebar.js
[task 2025-02-06T00:24:47.190Z] 00:24:47     INFO - TEST-INFO | started process screenshot
[task 2025-02-06T00:24:47.337Z] 00:24:47     INFO - TEST-INFO | screenshot: exit 0
[task 2025-02-06T00:24:47.337Z] 00:24:47     INFO - Buffered messages logged at 00:24:41
[task 2025-02-06T00:24:47.338Z] 00:24:47     INFO - Entering setup bound 
[task 2025-02-06T00:24:47.338Z] 00:24:47     INFO - Leaving setup bound 
[task 2025-02-06T00:24:47.339Z] 00:24:47     INFO - Entering test bound test_drag_expand_and_collapse
[task 2025-02-06T00:24:47.340Z] 00:24:47     INFO - Drag the launcher by 200 px.
[task 2025-02-06T00:24:47.340Z] 00:24:47     INFO - Buffered messages finished
[task 2025-02-06T00:24:47.341Z] 00:24:47     INFO - TEST-UNEXPECTED-FAIL | browser/components/sidebar/tests/browser/browser_resize_sidebar.js | Uncaught exception in test bound test_drag_expand_and_collapse - The sidebar is expanded. - timed out after 50 tries.
[task 2025-02-06T00:24:47.342Z] 00:24:47     INFO - Leaving test bound test_drag_expand_and_collapse
[task 2025-02-06T00:24:47.342Z] 00:24:47     INFO - Entering test bound test_drag_show_and_hide
[task 2025-02-06T00:24:47.343Z] 00:24:47     INFO - Drag the launcher by -200 px.
[task 2025-02-06T00:24:47.344Z] 00:24:47     INFO - TEST-PASS | browser/components/sidebar/tests/browser/browser_resize_sidebar.js | Sidebar is hidden. - 
[task 2025-02-06T00:24:47.344Z] 00:24:47     INFO - Leaving test bound test_drag_show_and_hide
[task 2025-02-06T00:24:47.345Z] 00:24:47     INFO - Entering test bound test_custom_width_persists
[task 2025-02-06T00:24:47.346Z] 00:24:47     INFO - Drag the launcher by 200 px.
[task 2025-02-06T00:24:47.346Z] 00:24:47     INFO - Collapse the sidebar using toolbar button.
[task 2025-02-06T00:24:47.347Z] 00:24:47     INFO - Expand the sidebar using toolbar button.
[task 2025-02-06T00:24:47.347Z] 00:24:47     INFO - TEST-PASS | browser/components/sidebar/tests/browser/browser_resize_sidebar.js | Sidebar expands to the previously stored custom width. - "267px" == "267px" - 
[task 2025-02-06T00:24:47.348Z] 00:24:47     INFO - Open a new window.
[task 2025-02-06T00:24:47.618Z] 00:24:47     INFO - GECKO(7728) | 1738801487617	Marionette	TRACE	Received observer notification browser-delayed-startup-finished
[task 2025-02-06T00:24:47.662Z] 00:24:47     INFO - TEST-PASS | browser/components/sidebar/tests/browser/browser_resize_sidebar.js | Sidebar expands to the custom width set from the original window. - "267px" == "267px" - 
[task 2025-02-06T00:24:47.708Z] 00:24:47     INFO - Leaving test bound test_custom_width_persists
[task 2025-02-06T00:24:47.709Z] 00:24:47     INFO - Entering test bound test_drag_show_and_hide_for_horizontal_tabs
[task 2025-02-06T00:24:47.710Z] 00:24:47     INFO - Drag the launcher by -200 px.
[task 2025-02-06T00:24:47.726Z] 00:24:47     INFO - TEST-PASS | browser/components/sidebar/tests/browser/browser_resize_sidebar.js | Sidebar is not hidden. - 
[task 2025-02-06T00:24:47.726Z] 00:24:47     INFO - TEST-PASS | browser/components/sidebar/tests/browser/browser_resize_sidebar.js | Sidebar is not expanded. - 
[task 2025-02-06T00:24:47.728Z] 00:24:47     INFO - Leaving test bound test_drag_show_and_hide_for_horizontal_tabs
[task 2025-02-06T00:24:48.150Z] 00:24:48     INFO - GECKO(7728) | MEMORY STAT | vsize 2112947MB | vsizeMaxContiguous 65029233MB | residentFast 572MB | heapAllocated 170MB
[task 2025-02-06T00:24:48.151Z] 00:24:48     INFO - TEST-OK | browser/components/sidebar/tests/browser/browser_resize_sidebar.js | took 6563ms
[task 2025-02-06T00:24:48.169Z] 00:24:48     INFO - checking window state
[task 2025-02-06T00:24:48.191Z] 00:24:48     INFO - TEST-START | browser/components/sidebar/tests/browser/browser_sidebar_collapsed_close_tab_button.js
```