Firefox menu shows all black when I click the menu line.
A Windows box appeared on my screen when I turned the computer on this morning, saying that my app (?) seemed blurry and did I want Windows to auto-correct it (or something similar... it was very early, before coffee), so like a silly novice, I clicked the button.
I should have been more wary, as this is a desktop, not a laptop or tablet that uses apps.
Since then, all the boxes for my Firefox menus and submenus, even my bookmarks line and right mouse click menus, are black when I click on them, and I'm unable to see my choices.
Vybrané riešenie
- Click the menu button
, click Help 
and select Restart with Add-ons Disabled.
When the Firefox Safe Mode window appears, select "Start in Safe Mode".
If the issue is not present in Firefox Safe Mode, your problem is probably caused by an extension, theme, or hardware acceleration. Please follow the steps in the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article to find the cause.
To exit Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.
When you figure out what's causing your issues, please let us know. It might help others with the same problem.
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PS. this happens only in Firefox... Edge and chrome menus all work fine.
Vybrané riešenie
- Click the menu button , click Help and select Restart with Add-ons Disabled.
When the Firefox Safe Mode window appears, select "Start in Safe Mode".
If the issue is not present in Firefox Safe Mode, your problem is probably caused by an extension, theme, or hardware acceleration. Please follow the steps in the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article to find the cause.
To exit Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.
When you figure out what's causing your issues, please let us know. It might help others with the same problem.
Yep, seems to have worked so far... thanks a lot! It was very disturbing, because I prefer Firefox to the other browsers, so I'm glad it's fixed. :)