When a piston plushies up 2 gravity blocks then the gravity block that is on top it breaks when the piston retrax how you recreate this is you place a sticky piston down but make sure the sticky piston is facing upwards towards the sky then plays 2 full blocks that are affected by gravity on top of the sticky piston then power it and then unpowered the sticky piston then the top gravity block will break off another issue is if you play sticky piston upward and a place a normal piston on top of the sticky piston facing upward and place 2 gravity blocks on top of each other then power the sticky piston and then power the normal piston and then unpowere the normal piston then unpowere the sticky piston then the top gravity block will break off can you please fix this because I love Sanders doors they are so easy to make and I love them can you please fix this thank you very much have a nice day.