Adult hoglins zombified into an adult zoglin deals the same damage as a baby

The bug

Adult zoglins appear to deal the same damage as a baby zoglin after an adult hoglin is zombified into an adult zoglin. Zoglins spawned by spawn eggs are not affected by this.

How to reproduce

1. Start world
2. Run

    /summon hoglin ~ ~ ~ {TimeInOverworld:300} 

3. Let the adult zoglin attack you
   → The adult zoglin will almost deal no damage to you similar to a baby zoglin.