The issue has been fixed in the latest release of InDesign – InDesign 2021.
Please update to this new version of InDesign to get the fix.
Adobe InDesign team
An error occurred while saving the commentKSchulz commented
Changing #1 helped me and I have my keyboard shortcuts back. Never have heard of "Keyboard focus" before. I guess you have to learn new terminology to use this program. What is the "control bar"? I also don't understand #3.