I was in a party and we coudn’t get boss quest loot (not one single time of the 3) to finish the quest. We had to abandon relog - then it was ok.
Yea the boss is bugged. I was able to loot him during the fight twice but third try it kept telling me “other player in party is looting” or something like that, which can’t be the case because he was like way past that quest lol. I also had to relog and when I logged back in it reset me back to 0 and I had to re-fight him 