I found out a bug like that today by attempting to create a vehicle that moves only when you press the plunger. I = iron block P = iron block with pig in it G = plunger, facing up IPI IGI IGI IGI and I keep spamming the plunger, it's hilarious to see the pig go behind the background, or the vehicle spontaneously combust, or watch the vehicle disappear, leaving the pig to noclip through the floor and crash the game.
