We need help in single player coop pc

pc

#1

Me and a friend we play on single player coop with a few mods.We are lvl 60 and have big bases and all that.
Whenever im hosting my single player map the thralls are normal(when you hit the they take dmg even fall down even die). When my friend is hosting and we play on his map his thralls are…stuck,they like rocks,if you hit them they dont even move no hp droping nothing,sometimes they dont even attack ´invadors´.
Pls help.