I fly with elytra then I use the rockets to fly up vertically, after a certain hight I get this message saying; "Invalid move player packet received" (shown as attachment) I don't know if it is just me or if it is a bug, then i get taken to the multiplayer area for some reason...
all together this bug has something to do with the elytra.
whenever i fly around with the elytra it gives me the same message, i wish i could have gave more information but i can't find the right pieces of information