Closed Bug 2039179 Opened 4 months ago Closed 3 months ago

Dropdown menus do not open reliably when second monitor is attached

Categories

(Core :: Widget: Gtk, defect)

Product:
Core
Component:
Widget: Gtk
Version:
Firefox 150
Type:
defect

Tracking

()

Status:
RESOLVED DUPLICATE of bug 2026258

People

(Reporter: mozilla.bulgur216, Unassigned)

References

Details

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:150.0) Gecko/20100101 Firefox/150.0

Steps to reproduce:

Attach second monitor to laptop via HDMI.
Click on icons in toolbar.

Actual results:

Dropdown menus do not open reliably. Sometimes they flash on screen, sometimes they appear in wrong place (top left corner). Most often they do not appear at all but occasionally they do open correctly.

Expected results:

Dropdown menus should open reliably and in correct place.

The Bugbug bot thinks this bug should belong to the 'Core::Widget: Gtk' component, and is moving the bug to that component. Please correct in case you think the bot is wrong.

Component: Untriaged → Widget: Gtk
Product: Firefox → Core
Severity: -- → S3
See Also: → 2035762, 2036213, 2039086

Does it work in earlier versions, e.g., Firefox 149?

Could you run mozregression to help us identify the root cause if it works with 149 or earlier?

  pip install mozregression
  mozregression --good 149.0 --bad 150.0
Flags: needinfo?(mozilla.bulgur216)

The issue does not occur in 149.

Flags: needinfo?(mozilla.bulgur216)

If you can run mozregression, we can a smaller range between 149 and 150. It will help us to identify the root cause.
The mozregression will help you to run nightly builds between 149 and 150. It probably try 5~8 builds to identify a range.

Flags: needinfo?(mozilla.bulgur216)

Actually, I can't recreate the issue on 150.0 with mozregression. The bug seems similar to 2039086 as the issue only occurs after using the browser for a while. Restarting the browser solves the issue temporarily. The issue starts reoccurring after ~30 minutes of use.

Removing the HDMI cable to the second monitor also solves the issue, reattaching the monitor brings it back.

I'm pretty sure the issue started occurring for me after I updated to 150.0.

Flags: needinfo?(mozilla.bulgur216)

Could you provide about:support?
Having second monitor is critical recently. Could you also share the configuration of your screens? For example, screen size and left or right.

For comment 6

Flags: needinfo?(mozilla.bulgur216)

Most probably dupe of Bug 2026258.

Status: UNCONFIRMED → RESOLVED
Closed: 3 months ago
Duplicate of bug: 2026258
Resolution: --- → DUPLICATE

(In reply to Martin Stránský [:stransky] (ni? me) from comment #8)

Please try latest nightly or beta:
https://fedoraproject.org/wiki/How_to_debug_Firefox_problems#Testing_Mozilla_Nightly_binaries
Thanks.

Latest nightly seems to have fixed the bug.

Flags: needinfo?(mozilla.bulgur216)
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