Baby piglin and baby zombified piglin legs don't move the same way as their adult counterparts do. This can be observed using using the tick command to freeze the game and spawning an adult and baby versions of the two mobs with no ai and hitting them.
The baby piglin and its zombified variant swing their right leg forward and swing their left leg backwards. However, adult versions of the two mobs swing their left leg forward and swing their right leg backwards which this is the correct behavior and the behavior that baby piglins and zombified piglins used to move their legs prior to the new models. The sitting animation is also affected.
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