Player arm swinging animation in third person view has a frame missing at the end

Summary:
The player arm swinging animation in third person view has a frame missing at the end.

Steps to Reproduce:

1. Switch to third person front view
2. Press the attack button

Observed Results:
The arm swinging animation has a frame is missing at the end.

Expected Results:
The arm swinging animation should not have a frame missing at the end.

Videos:
1.17.20.21:
Minecraft 2021-07-01 08-18-31.mp4
1.12.0:
Minecraft 2019-10-29 10-43-42.mp4