IGN: Sir_Tealsworth Game: Hub Bug: When I wear my pet slime on my head and jump off the edge of the map I fall to the world limit and then slowly descend to Y -200 before the game kicks me for flying. It took me a bit to figure out what was causing it but I'm 90% sure the cause is wearing a pet hat and falling off the edge of the world. Here's a screenie for proof: (I encourage other people with /hat to try this with different pets so we can know if it's a specific one)
When pets fall off the edge, they keep falling until they teleport back to the player. When a player jumps off, once he/she reaches a certain height, he/she is teleported back to the designated lobby. Since pets can continuously fall, the player also continues to fall until kicked since they are attached to a pet. This is what is most-likely causing it. (In-case this is fixed, this information may be useful).