[Naxxramas] Sapphiron missing and Kel'Thuzad disappears.

[Henngest]

Bug description: In 25 man Naxxramas, after doing all the quarters, Sapphiron is missing and when I tried to fight Kel'Thuzad (step in the ring), he says his intro and disappears, no mobs around, and after a while he comes back, same thing happens continuously.
Proof: https://imgur.com/a/kS7mVoI

[Jambalak]

Confirm.

Also this post: https://forum.wow-freakz.com/Multiple-Naxxramas-bug-and-wrong-spawned-objects-t548781.html

[HM9cPhABFctJ]

I can also confirm this; Sapphiron is completely missing and Kel'thuzad simply resets himself. Over and over and over. Tried several variations in the assumption that the trigger could possibly be a very narrow margin but nothing works.

[wbn]

^ Did the same without any luck. If you search up the achivement from killing KT it says someone completed it 22 days ago, how.. I don't know.

[HM9cPhABFctJ]

Maybe it does work on one raid size but not the other. I have noticed the same with ICC for example. 25 man ICC works a lot better than 10 man. Could be the reverse for Naxx. Haven't tried yet. Will be a few more hours before I can again; decided to re-roll a different class and still leveling back up.

[pilnahn]

I've tried in 25 and 10 man with the same issues each time

[AraTheRandom]

I have the same issue, nothing works.

[wickidslpiff]

Confirmed for 25m

Really wanted that shield too...

[hammerboss]

I Confirm .......the encounter starts then immediatly resets and the boss disappeares on both 10 & 25 man difficulties

[Barnacle]

Confirmed

XXX Barney