When I decided to test out the new snapshot, just of wonder I equipped an Elytra, and it rendered with my skin instead of its own textures.
What I expected to happen was...:
I expected the elytra to be textured with its normal pink/purple texture (since I've got no cape).
What actually happened was...:
It was textured accordingly to my skin on minecraft.net, and it looked kinda broken.

Steps to reproduce:
1. Enter a world with the new snapshot.
2. Take an elytra from the creative inventory.
3. Equip it.
4. Press F5 to go to third person mode.

Attached is a screenshot.

Thank you, and I hope for a fix soon.
Sorry I couldn't bring up more details.

EDIT: I did some more testing in the snapshot, and when I tested the suffocation from too many entities in a location (mass pig spawn), my elytra changed again - this time to a photo of ALL item textures, with their diffrent states. RANDOMALLY CHANGES