Steps to Reproduce:
1. Place a nether portal in the overworld
2. Wait until one or some zombified piglins naturally spawn in the overworld
3. Find a piglin in the nether and make it go to the overworld through the nether portal
4. Wait until the piglin is zombified and hit it
What I expected to happen was...:
The natural spawned zombified piglins will assist the zombified piglin converted from piglins
What actually happened was...:
The natural spawned zombified piglins don't do anything
I was unable to reproduce this issue, I added the screenshot for the issue, the zombie piglin holding the sword is the nether-portal-spawned zombie piglin, and the zombie piglin holding the crossbow is the zombie piglin that being converted from piglin. The zombie piglin holding the sword still attack me when I hit the zombie piglin holding the crossbow.