Today i tried to do the Mage Tower challenge as tank. Once i've entered the room i've immediatly noticed that there was something wrong with the boss location, he is not in the centre of the room where he is supposed to be, but then i said to my self , maybe they changed it to make it easier since it's a lil bit challenging if done without gear . Then i engaged the boss and i couldn't attack him anyhow , i got back and i tried to hit it with heroic throw and then ( like in the video ) i used Intercept to see where the boss really was and it came out that he is in the centre of the room but not the npc model.
https://youtu.be/LhC-8jlw7Ws Here the link to the video i quickly recorded or the screenshot down below to prove the wrong location of the boss