The bug
Baby hoglins/zoglins can have the same attack damage as an adult hoglin/zoglin.
How to reproduce
Right-click a hoglin/zoglin with it's spawn egg to spawn baby hoglin
Go to survival
→ ❌ Baby hoglins/zoglin deals more damage instead of dealing half a heart.
This bug is known to happen after the following actions:
Summoning baby hoglins/zoglins with commands
Right-clicking an adult hoglin/zoglins
Breeding 2 hoglins
Baby zoglins after zombification of baby hoglins.
Not affected
Naturally spawning baby hoglins
Baby hoglins/zoglins spawned randomly with a spawn egg without right-clicking onto an adult.
Custom mob spawners that spawns an adult and baby hoglin/zoglin.
In 20w12a