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

Minecraft 20w07a - Singleplayer 2020-02-17 13-40-44.mp4