both demonlord perk and zombies from summon attack your thralls , pls make them allied
and also buff summon zombies spell , it takes forever for them to come one by one , by the time they all out the fight would already end , let alone they got only 100 hp which is really really low and get 1 shot easily
Also it could be their settings or something. Nothing like that happened in all the testing I did. That only happens when you intentionally have the newly resurrected zombie/demon stop following and break them from your clan.