1743250 - After using DevTools, all menu text and alert text disappears, key commands stop working, Firefox will not quit, DevTools shows big white panel with list of CSS rule selectors

Status: RESOLVED INCOMPLETE

(DevTools :: Inspector, defect)

Description

[hello]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.1 Safari/605.1.15

Steps to reproduce:

Open either Firefox or Firefox Developer Edition on Mac OS Monterey (M1 Max) and use dev tools on any website, then change a CSS rule.

Actual results:

All text on top bar of DevTools (Console, Debugger, etc) disappears, large white panel opens up at bottom of the screen showing all possible CSS options for the rule, this panel takes over the screen so you can barely see DevTools. All key commands within Firefox stop working and alert windows show no text, just an unclickable "Okay" button. Only way to close is by force quitting Firefox. The issue is not rectified upon reinstalling Firefox or reopening, and the problem is not fixable.

DevTools will not reopen after the issue is triggered, clicking "Inspect" does nothing.

Expected results:

DevTools should be working as it always has for years?

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::Layout: Text and Fonts' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.

Comment 2

[Julian Descottes [:jdescottes]]

Sorry, I missed following up on this bug.

I couldn't reproduce the issue, do you still have it regularly?

Comment 3

[BugBot [:suhaib / :marco/ :calixte]]

Redirect a needinfo that is pending on an inactive user to the triage owner.
:jdescottes, could you please find another way to get the information or close the bug as INCOMPLETE if it is not actionable?

For more information, please visit auto_nag documentation.