When one names a block type using the anvil and it is placed and picked back up it is not named anymore.

I thought that after I named, the pumpkin for example, it would stay named after I wold pick it up.

What actually happened is that when I picked it up it reverted to it's previous name.

To reproduce:
1. Take block to anvil and name
2. place block on the ground
3. Break block and notice the name has reverted to original