This is a bug in the latest snapshot: 14w32d.
I started a new world today checking out all the new features in survival. I placed down one of the new doors from the snapshot to check it out
and when I broke it, I got the old wooden door back.
I expected that the door that was placed would be the same door when broken.
But instead I got the old wooden door back from it.
Steps to Reproduce:
1. Place on of the new doors added in the 14w32d snapshot.
2. Break the door in survival.
3. You get a wooden door and not the one you have originally placed.
This issue has been reported already. It has been linked to the original bugreport.
Please search before reporting any bugs, as it's likely that one exists already.