Pausing game with any item in your hand/inventory makes pausing the game look goofy

Pausing the game with any item in your hand seems to pause everything apart from your legs moving when the game is paused.

Steps to reproduce:

1. Log on minecraft,

2. Activate any animations pack

3. Load/create a world

4. Get any item and hold it in your hand

5. Run and pause the game with the item in your hand

Expected result: Legs don’t move

Actual result: legs do move