Affects Version/s: Minecraft 18w45a
Fix Version/s: None
Put the summary of the bug you're having here
What I expected to happen was...:
I expected to put diamond horse armor on the horse to see if its textured had changed.
What actually happened was...:
When I put the horse armor on the horse, the horse disappeared.
Steps to Reproduce:
1. Spawn a horse and tame it
2. Grab horse armor and put it on the horse