When not aiming at a block through a ridable mob while using a spawn egg on it, the player starts riding the mob and a baby mob is spawned

The bug

When not aiming at a block through a ridable while using a spawn egg on that mob, the spawn egg is used on the mob (i.e., a new (baby) mob is spawned), and the player starts riding this mob.

This affects:

• Horses

• Llamas

• Striders (you always start riding the strider)

• Trader llamas

List may be incomplete.

Video