Entities using a player as a passenger look strange in Third person PoV
If you use a tool to set an entity to be a passenger of a player, EG using bukkit to do so on a server, if you go into third person POV, the entity is floating a good ways above the character's head, for you. It looks normal for other people, but is floating above the player's head for themselves.
Example:

2013-07-12, 03:12 AM
2017-04-30, 05:55 PM
2013-07-12, 04:14 AM
0
1
-