Thanks for the feedback. Did you get out of bounds near the fourth level, or in one of the transition tunnels? I was specifically making the wall collision thick in the puzzle rooms themselves to avoid potential out of bounds stuff, but I got lazy with the last one and the tunnels since it was getting close to the deadline.
EDIT: Never mind, I had my brother play it, and he managed to get out of bounds via landing on an attachment plate at an acute angle. And I saw first-hand how bad the bouncing around can be if you do something wrong. This is why playtesting is a thing...