Command+F not working on Mac across all applications
This has been driving me nuts for months too, and today I figured out that when I press Command+F (in that order), the F key press doesn't register. However, if I flip the order by pressing F + Command, it works again. That seems to "reset" something so that I'm able to continue using Command+F for the rest of that session. I hope this helps!
this is old post but it is first in the google search results by "cmd F doesn't work", so let me post a link to working solution
https://discussions.apple.com/thread/5471806
TL;DR
- remove
~/Library/Caches/com.apple.Safari/Cache.db - restart in safe mode
- restart again in normal mode
- PROFIT
and i'm not sure about deleting file, please someone check it