I have noticed this since the snapshots of 1.9. When I right click with a shield in my hand, third person viewers can see that the handle of the shield is not lined up with your arm, when it is when you are not blocking. I'm not sure if this was intended, but it doesn't look right.

I thought that it would regularly display it.

But instead it was off.

Steps to Reproduce:
1. Acquire a shield
2. Press the f5 key
3. Right-click while holding a shield
4. Tilt your view to see behind the shield