Standard cmd key combinations stop working after upgrade to Monterey 12.1
I have a M1 Mac mini which I just upgraded to Monterey 12.1. It has a Logitech bluetooth ergonomic keyboard connected via standard bluetooth (rather than via a logi receiver). It's always worked flawlessly.
After upgrading, most of the standard key sequences have stopped working. For example, typing Cmd-C enters ç instead of copy. None of the standard combinations seem to work... e.g. Cmd-P, X, S enter odd characters instead of Paste, Cut, or Save respectively.
I even tried creating App shortcuts, but no help.
Mac mini 2018 or later