Arm holding item moves backwards while using items

the bug

Normally, your arm that is holding an item sticks out a little bit. However, this is not the case whilst eating food in your other hand.

Steps to reproduce

1. Place totem in offhand
2. Place food in main hand
3. Go in front-view third-person mode (F5 twice)
4. Eat the food

-->  Notice the hand containing the non-food item moves backwards as if you are not holding it.

Additional information

It is possible that this is an intentional feature.