When you equip your horse with some horse armor, the textures seem to start z-fighting at the ears.
video: https://youtu.be/QQJXZhpAEGs
MC-121628
Horse armor textures z-fighting
Resolved
Fixed
9
YZERO
coschevi
Confirmed
horse, texture, z-fighting
Minecraft 17w45a, Minecraft 18w01a, Minecraft 18w03a, Minecraft 18w11a, Minecraft 18w22c, Minecraft 1.13-pre1
Minecraft 1.13-pre2
Retrieved
Affects 18w11a