As far as I'm aware, the main bugs there is in this version is that if you move while cleaning (specifically, if you register a move and get out of the stain collision box during the cleaning process), and a possible collision bug if you hit a corner at a bad angle.
Not saying it's okay, but did you run into other bugs? I never got such harsh feedbacks on that :o
(also, for the record, this was a game jam game, so I didn't have much time/incentive to go back to fixing bugs after it got finished; I'm sorry ahah)