Pigmans Zombies don't spawn or are born from Normal or Enchanted Armor. And they do not appear using the Enchanted Tools

Steps to Reproduce

1. In any Gamemode put in the difficulty HARD to be easier Spawn of the mobs with armor or other enchanted tools
2.More When You Spawn Many Pigmans Zombies you will see that they are not born with any kind of armor or enchanted tool