Side of bed has side textures flipped

Put the summary of the bug you're having here

What I expected to happen was...:
The bed would have the non-flipped textures on the side

What actually happened was...:
The bed's side had flipped textures

Steps to Reproduce:
1. Open Minecraft
2. Look at a bed's side (left side if head is south or east, right if head is north or west)