Ctrl+F shortcut is not working anymore

Good evening everyone, thanks in advance for your help.
It’s silly, but my ctrl+F shortcut isn’t working anymore; I can go into the options to click manually to search, but the shortcut simply doesn’t work, like nothing happens at all. Any ideas?

I already tested it on another keyboard, reinstalled the driver, no conclusive results.
The Ctrl key and the F key work...
Other shortcuts work like ctrl + s or + c, + v... etc.