custom named placeable items reverting to default name

placeable items that are given a custom name using the anvil will revert back to there default name when placed on the ground and picked back up

What I expected to happen was...:
blocks would retain there custom name 

What actually happened was...:
the items reset there names 

Steps to Reproduce:
1. take any placeable block (bed,chest,torch) and name it in an anvil 
2. place it in the world...
3. pick the item back up...