Elytra Texture is just really bugged out and changes as you hold items or put on different types of armor.
Linked issues
Comments

Elytra Texture is just really bugged out and changes as you hold items or put on different types of armor.
Stefan van den Wijngaert
(Unassigned)
Unconfirmed
Minecraft 16w39a
Retrieved
Duplicate of MC-107148