Don’t know if anyone else is having this issue. I’m trying to fight Kel’ Thuzad as a 80 prot pally and the fight cancels out shortly after pulling. Last Boss of Naxx on Retail.
Just had the exact same issue, the fight will start when you walk to him and the encounter will reset around 30 seconds into the pull.
This isn’t the same issue as the one in the past where if you start killing mobs at their spawn rooms the encounter also resets. I stood in the middle of the room and did nothing but the encounter resets at exactly the same place.
There is some janky movement in Naxx on any unit that patrols - same with Black Temple. Wondering if this has anything to do with it. All of this is new with the patch.
Fight still bugged as of today
I found that several of the mobs prior to KT becoming active teleport to the center of the room and then evade, causing the fight to reset. I was able to finally kill it, but it took several tries due to resets. Something else changed with some mobs in the dungeon, a few random pathing packs took weird routes and then the gauntlet before Heigan’s mobs oddly reset after moving just a short distance away.