Inventory Inverted Player

Put the summary of the bug you're having here
Inverted survival and adventure inventory player model

What I expected to happen was...:
I created a singleplayer creative world for the Minecraft snapshot 15w31a.
When I changed the gamemode to survivel I expected to see a normal playermodel in the inventory.

What actually happened was...:
What I did see was it was an inverted inventory playermodel and with the back of the player facing to the real person.

Steps to Reproduce:
1. I made a new creative singleplayer world.
2. Changed the gamemode in game to survivel/andventure with the command /gamemode s.
3. Openend my inventory and saw an inverted player model.