Thanks for the report! You’re right, there is a bug. I’ve reproduced it myself. The GameJam version doesn’t allow resubmission, so I’d like to update it after GameJam ends, if it can be handled. I apologize for the unplayable state of the game.
If you download and play the game via the itch.io app, you won’t have this problem, so I’m sorry, but I recommend playing it that way.