I did the whole portico dungeon and only received xp for 2 of the quests. I don'tknow if it was because i was on a hydra mount or not. I hoped off the hydra mount and activated the protector and it gave me th 17k xp for this and i got another 17k for picking up (if i remember correctly) the moon relic. I've never had this problem before when assisting others with dungeons. So i did not receive around 60k plus xp that i should have. This is on my wizard Mycin Lengentheif. When i re-entered the dungeon for a second time that same night all the xp was cut in half as if i received the xp the first time. I did the first 2 or 3 quest and again did not receive any xp for them again i didnot go in a third time to see if the xp was 0 or not.
