Mirrored Textures on Certain Sides of Blocks

I was playing my new 1.7 world today, and I was building my house. When I placed the door and opened it, I noticed that the doorknob was on the wrong sore of the door. This happened on the other side of the door, too. At first I thought it was exclucive to doors, but then I realized that every block had their (I believe) north and east (and maybe bottom) textures side inverted.

Obviously I expected textures that weren't side inverted.

What actually happened was that certain faces of blocks had mirrored textures.

Steps to Reproduce:
1. Go into 1.7.2
2. Place a door or a bed
3. Observe it, you'll see it