Unable to complete 'The Sacred and the Corrupt' [bugged?]

[Miriath-bronze-dragonflight]

Hey all,

I am trying to do the ‘The Sacred and the Corrupt’ Quest from Dorian Mograine in ICC.
It requires me to fly to Frostmourne Cavern and in there I am supposed to see Light’s Vengeance. Now when I enter the cave I don’t see Light’s Vengeance, nor does The Lich King spawn to chain of ice me.

Instead of this, the big mob spawned by the Lich King is already there, casting into the nothingness. I do see a bunch of ghouls, which respawn when I start killing them.

Does anybody know what I have to do in order to complete this quest? Is it glitched or bugged?

I am trying this on my Warrior on the Bronze-Dragonflight server.

Things I have already tried:
Re-enter the cave
Reload inside the cave
Reload outside of the cave and re-enter
Disbanded and gather quest again
Re-entered different day

[Darkchain-draenor]

Hi Miriath,
I have encountered the same error today. I have created a HD ticket regarding the issue and within minutes I got a response - with the item in my mailbox. I would recommend that you do the same. Also, I have been asked by the GM to report this as a bug, so the Dev. Team can start correcting the issue asap. Good luck!