Very strange! Could you tell me a little more about your physical setup? Which mouse and keyboard you have, and whether you have any other input devices plugged in that you maybe aren't using?
I'm running the game on a Dell G5 with Windows 10 and the keyboard and mouse that came with my Dell Optiplex 360. I have a headset, an audio interface. and a Switch Pro Controller plugged in as well. Maybe that's what's causing the issue.
Thanks so much for diagnosing that! Glad my suspicion about other input devices was correct because otherwise it would’ve been horrible to work out! We’ll see what we can do.