I'm playing the ULTRA version that just came out on Steam (I was a kickstarter; thank you for the key!).
I'm having some trouble with this game, whereby one key will stick and then none of the others work. As in, all it will do is repeatedly trigger a keypress for one key and no other keys will respond when I press them.
It's only happening in this game, as far as I can tell there is nothing wrong with the keyboard.
It seems to happen most often with the Enter key. So if a game has started, all I'll see is the table launching itself and I watch helplessly as it drains each ball, pressing the shift keys frantically, though they do nothing.
I think it may also sometimes happen before I've started a game, in which case I can't press "S" to start.
When the keys are sticking, I can still use the mouse, I can still exit the table and go back in - but it does not fix the keys. Exiting the application altogether, returning to desktop, then restarting the application does seem to fix the issue, at least, until it occurs again.