Throwing an ender pearl directly at a zombified piglin angers it and all other zombie piglins nearby, despite pearl projectiles not dealing damage.
Steps to reproduce:
- Summon at least two zombified piglins, using /summon or simply by traveling to the nether.
- Set your gamemode to survival via /gamemode
- Give yourself an ender pearl using /give, and throw it directly at one of the zombie piglins.
The zombie piglin and all other zombie piglins nearby aggro on the player and attempt to kill them.
The zombie piglins ignore the player, as ender pearls do not deal damage to mobs.
(EDIT: I posted this too soon by accident, and have finished it.)