Zombified piglins' sleeve layers are not held upwards like their arms

The bug

As of 20w22a, the Zombified Piglins now stick their arms upward like zombies. However, if you add a texture to the second layers of their arms (aka the sleeves), they appear to act as regular human arms.

Images:

• Zombified piglin texture with added sleeves
• The texture on the zombified piglin model in game.