Internal keyboard randomly stops working (after upgrade to Catalina) - any way to reset it?

Is there anything like a reset of the internal keyboard device that I can try doing instead of having to restart my MacBook completely?

• The internal keyboard on my MacBook Pro just stops responding to key presses at a random moment (and stays like that). After restarting, it works again.

• it happened 7-8 times already, every time in the middle of typing something. It also happened twice while I was typing this question.

• Trackpad continues to work normally.

• It happened while I had an external keyboard connected, as well. Actually, two of them, both Apple keyboards -- one wireless and the other USB. Both of them, and the internal keyboard, stopped working at that point. When I re-connected a keyboard, it continued working again (only the reconnected one).

This appears to be a Karabiner bug (at least in my case).