Baby zombie villager's arms are positioned and move incorrectly when holding an item

The Bug:

When a baby zombie villager is holding an item (such as a weapon, block, or seemingly any other item), its arms are positioned too far towards the front of its body, and aren’t reaching outward like an adult zombie villager’s. They also appear to move incorrectly, as if its arms are sort of detaching from its body.

Steps to Reproduce:

1. Summon a baby zombie villager with a command such as the following:

/summon zombie_villager ~ ~ ~ {IsBaby:1,equipment:{mainhand:{id:"stick"}}}

1. Summon an adult zombie villager with the same command, but with “IsBaby” either removed or set to 0, of course.

2. Summon a baby zombie villager without any items in its hands.

3. Note how the positioning and movement of the arms belonging to the baby zombie villager holding an item appear compared to the adult and the baby who isn’t holding anything.

Expected Result:

The baby zombie villager’s arms would be positioned and move the same as when they’re not holding an item, matching the adult.

Actual Result:

Its arms are positioned too far forward, aren’t reaching outward, and move strangely.