Iron Golem Creation Bug

When ever I make an iron golem in the most recent snapshot (13w01a)...

What I expected to happen was...:
For the iron golem to be created and the iron and pumpkin blocks taken along with it

What actually happened was...:
It creates the iron golem but leaves behind the arm and leg iron and only takes the body and pumpkin blocks.

Steps to Reproduce:
1. Create an iron golem in creative mode.
2. ???
3. Profit