if you are sitting on a horse in multiplayer survival, and you log out, logging back in will leave you unable to move the horse you are using, but will also provide you with another identical horse, with saddle and the same armour.
MC-16625
horse multiplication
Resolved
Duplicate
0
edward hayes
(Unassigned)
Unconfirmed
Snapshot 13w21a
Retrieved
fixed in 13w21b