Hey, I had the same problem, in my case the game found 4 keyboards. I do have another bluetooth keyboard paired, but it was not connected... Hopefully Jonah will be able to clear it out.
About exiting game: shortcut Alt + F4 should do the trick :)
It's possible that the HID code is incorrectly detecting other devices as keyboards. That shouldn't stop you from playing... unless keyboards you have connected (or paired) aren't showing up? Let me know if that's the case and I can look into it.
What's stopping me playing is 5 keyboards getting detected, with my only option being to disable the only keyboard that actually exists. I can't press keys on spurious/virtual keyboards to remove them.
