Invisible passenger when playing on line multiplayer

When I play on line with friends in my survival world I become invisible to them every time I use the train tracks to go somewhere. My friends don't become invisible. They can see each other in their console, but can't see me anymore. I can see them in my console and I see myself. Also sometimes one of them becomes invisible and can't move at all. He can throw stuff out of his pockets, but gets stuck and invisible. This happens after riding trains.