Possible Fixes

Yes

Modpack Version

ATM10 1.15

What happened?

Summary

The "Raise Dead" spell from Iron's Spells and Spellbooks can sometimes cause summoned mobs to spawn with Infernal Mobs' abilities and attack the player.
Summoned mobs cannot be attacked by the player, will not be attacked by other allied mobs/summons, nor do they despawn in Peaceful mode. They can only be killed by hostile mobs or indirect damage such as fire, drowning, or explosions.

My Encounter

My first instance was a zombie with the "alchemist," "webber," and "withering" abilities who - despite the rest of the summons be passive towards me - would throw potions of poison/harming/etc., slow me down in spiderweb, and cause wither.

I was able to recreate this behavior in a Creative test world.

latest.log

No response

Developer reports

No response