login screen doesn't register some USB keyboard keypresses after boot

Hello,

It seemed that I celebrated my upgrade to Big Sur a bit too early - I now have a pretty annoying bug.

On boot, when it's time to enter my account password, macOS register some, but not all, of the key presses on my USB keyboard. E.g., "A" is registered, while "S" is not; most of the right side of the keyboard is registered, while most of the left side of the keyboard is not.

I have a GoldTouch USB keyboard, the the switch is in "Mac" position.

Some additional info:

Does anyone have any idea what might be going on?

Author: @vtail57