is you make a observer redstone clock then place a piston then destroy the piston (need to be really good timing) the piston will glitch out and is invis (client side) while piston is glitch player is able to glitch out boats i.e (Floating Boat, boat sometimes get tp-ed in  air)
other players how ever are able to destroy the glitched piston as if there was nothing wrong with the piston at all