We got a co-op session going (easily and flawlessly) last night. By the time we got to the shore and "helped" the trapped flayer in the early game, my partner got to level 2 and so did the NPC cleric. I did not. I looked and had only HALF a level of XP. We started paying attention and when he would jump into dialogue first he'd get the XP and I wouldn't. I'm very far behind now.
We quit out and came back in and it still is doing it.
