It seems like if you die by falling off the map without your ball falling with you, you keep falling endlessly which basically forces you to quit to the castle. The death plane only seems to work for the ball, not Glover, this seems like a major issue in an otherwise mostly excellent port!

EDIT: I apologize, this only happens when the game is set to 30 or 60fps. If anyone else runs into this, use default framerate.