While I was on multi-player I logged off but on my donkey. When I logged back on I was on my horse but there was also another donkey there (a duplicate) with the same things in its inventory as well. This also happens in single player. Just get on the horse and log off or quit, then log back on or enter the single player game and the other horse entity will be there.
Everything is duplicated as well including the name of the horses and the armour.
Don't ask how I found this! Just logged off on my horse and it happened. Enjoy! (MCN: Ch4osNewb / Howardss)
Related issues
Attachments
Comments

So yeah... logged out and on a few times and this was the result. And then the saddles from killing them again.

41st duplicate of MC-13737, please use the search function to see if your bug has already been submitted. Currently over 56% of tickets are being closed as duplicate.