So I have an issue where I use well-known shortcuts like CommandS (save) or CommandF (find) and they don't work. However if I introduce the fn key, they start working (i.e. fnCommandS).
Regular CommandC and CommandV work.
I also have the setting in System preferences → Keyboard "use F1, F2, etc. as standard functions" selected.
I can't figure out how the fn seems to be toggled the wrong way (up when it should be down and down when it is up) for shortcuts or where to look next.
This is happening on the laptop keyboard and my Magic keyboard attached via Bluetooth.
Machine specs
- macOS Catalina 10.15.4
- Mac Pro 2017 (13" with Touch Bar)
Fn
keys work as expected? Did you remap any keys by chance? See the apps in this answer to see what shortcuts are currently bound.