Been experiencing some bugs on bosses on quest while partying with a friend. We are two people in a party, and the boss just stopped attacking us, but we still hit the boss and still moving. Also, when I did this solo the boss AI is normal as any other. This happened on some bosses such as the Giant Beetle level 52 I think and a weaker one the Big Green Standing Cow level 30+
Thanks for bringing a great game guys.