Untouchable follower bug

[Jadehnt]

Hi everyone,

I have some bug with my followers.

They can't be hit by any type. When they are surrounded by enemy, they don't get any damage like an immortal.

 

I tried to spam spell on them, thrust them by sword and sprint into them but it's not working. It seem everything go through them.

What's this bug? How can I solve it? It's break the game when fighting.