M1 iMac Magic Keyboard Function Keys?

I do NOT get any response when attempting to use the F4, F5 or F6 keys, and the rest of the function keys work as expected. The help link does not help for this problem. I tested booting into safe mode and those three FN keys do not work then either.

OK, update, but this makes no sense. I unchecked "Use F1, F2, etc." they work now. Go figure. That seems backwards. I will test more.

Why would only those three FN keys not work with "Use F1, F2, etc." checked, but the rest do work?

dialabrain wrote:

FWIW, it is not backwards. If you check "Use F1, F2…" as normal function keys, they do just that. They no longer perform the special functions printed on the keys.

So with that setting unchecked the FN keys work as the icons printed on the top of the keys, and with that setting checked the FN keys work as the icons printed on the top of the keys when you also hold down the FN key, but F4, F5, and F don't not work with the FN key held down. I'm thinking this is a bug.

Call me the Apple Orkin man!

I just realized that FN6 is for Do Not Disturb, but it still doesn't work! I sent a bug report to Apple. Please do the same if you have this problem too.