Zolin,Blood priest resurrected

During the campaign Zolin,Blood priest resurrected. I killed the boss and loot dropped and Doryani arrived as normal, then Zolin got back up with what looked like 0 hp but his energy shield regenned. I could damage the energy shield but not kill him. I could progress the campaign as normal

Same happened to me, but I can't continue the campaign.... i'm just stuck there. Nothing happens after.

Same thing just happened to me.