The problem is that my friend and I are playing on our own server and we want to use only one ship (he flies the ship while I am passenger) but when I am as a passenger in the back when he flies it usually works pretty good for the first 10 seconds or so but then I slowly start sinking in the ground or the wall and I am quickly thrown out of the ship. We tried this several times both with and without using the gravity cube and neither way did it work. Thanks this bug does kind of ruin our exploring but I still love the game.