Every time I go into the nether at crypticmc.com Zombie pigmen HATE me even on my first time ever in there in 15w32c (I have never been in this server before)

Put the summary of the bug you're having here

What I expected to happen was...:
They would love me like i never hit them before 🙂

What actually happened was...:
They HATED me and killed me (There is a nether portal at spawn)
😞
Steps to Reproduce:
1. enter the nether right after someone went in.
2. deflect a fireball and hit the ghast
3. kill in and watch DEATH HAPPEN FASTLY (i dont know how to use Choose Files button) but its .minecraft and the minecraft logo in the launcher with the dirt block and the actuall minecraft has a crafting table and version from 15w31a to 15w32c