Some baby mobs do not have heads

Summary:
Baby sheep, chickens, cows, pigs, ocelots, rabbits, pandas, polar bears, wolves, villagers, zombies, zombie villagers, drowned, piglins, zombified piglins, hoglins, and zoglins do not have heads.

Steps to Reproduce:

1. Spawn a baby version of the mobs listed above

Observed Results:
The mobs have no heads.

Expected Results:
The mobs should have heads.

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Original Description:
Logged in after update, and baby sheep do not have heads. Double checked on my husband's laptop, and same issue there.