The problem here is that most of us replicated the bug by simply plugging a controller, and it would fix after unplugging it and then completely closing the game and restarting it, all of this while making sure that the controller isn't plugged. We're going to find a solution for this, but in the meantime, can you confirm that you actually did these steps?
1. Completely unplug the controller
2. Restart the game (not the level, but actually close the whole game and restart it while not plugging the controller at all)
Please try to do this one last time, if it still happens then I'm afraid to say that you'll have to wait until the next update.