Hi, can you clarify whether this problem is on your iPhone/iPad (Firefox for iOS) or on your Mac (Firefox for desktop)?

In either case, have there been any major developments with your Firefox installation such as:

• Uninstall/Reinstall
• Automatic or manual update
• Refresh or new profile created

Thanks.

For quick reference, this thread is: https://support.mozilla.org/questions/1342603

maybe Automatic update

Automatic update on an iPhone/iPad or on your Mac? If it's the Mac, a moderator can move this question to the Firefox for desktop board.

macOS big sur 11.4