Player's right arm does not swing in third-person view when moving while holding a fishing rod in the Star Wars resource pack

Summary:
In the Star Wars resource pack, the player's right arm does not swing in third-person view when they are moving while holding a fishing rod.

Steps to Reproduce:

1. Open a world with the Star Wars resource pack enabled
2. Hold a fishing rod
3. Switch to third-person view
4. Start moving

Observed Results:
The player's right arm remains still.

Expected Results:
Both of the player's arms should swing.

Video:
Minecraft 2022-02-13 13-10-02.mp4