Arm swing animation is played when eating or drinking an item

The bug

When starting to eat or drink an item, the arm animation is played in third person mode. It also sometimes is visible in first person mode when stopping to eat. This looks rather odd. Not sure whether this is intended or not.

Videos

Third person:
Minecraft 19w38b 2019-09-19 19-12-40.mp4

First person:
Minecraft 19w38b 2019-09-19 19-13-21.mp4