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OSX Custom Copy, Paste, Select All keyboard shortcuts not working

boast

I have keyboard shortcuts for Copy, Paste, and Select All inside System Preferences > Keyboard > Shortcuts > App Shortcuts > All Applications. When applying my keyboard shortcut, I see the Edit > Select All, for example, get selected in the menu, but nothing happens. If I open up Chrome and use the same shortcuts, they work fine, so the system is registering the shortcuts.

I have keyboard shortcuts for Copy, Paste, and Select All inside System Preferences > Keyboard > Shortcuts > App Shortcuts > All Applications. When applying my keyboard shortcut, I see the Edit > Select All, for example, get selected in the menu, but nothing happens. If I open up Chrome and use the same shortcuts, they work fine, so the system is registering the shortcuts.

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I don't see an edit button.

Restarting firefox in safe mode didn't help, so extensions doesn't seem to be the issue.