I defeated him and it's still there so
This is highly incorrect. The refined skybox without the anima siphoning from the Castle happens for a character after getting an Inerva Darkvein kill, as you can clearly see that the anima siphon behind her encounter space has ceased.Source: Me, I have no Denathrius kill and we noticed it after leaving the raid last week after killing her.
Strange, the anima stream wasn't showing after killing a few bosses in Castle Nathria for me, and I didn't even kill Sire Denathrius at the time. I think it may have been the Lady Inerva Darkvein kill that stopped the anima stream flowing. Not sure if it's intended.
The anima is still going to the Maw after clearing the raid twice and turning in the quest.
The second skybox change happens after killing Lady Inerva Darkvein, not Denathrius.
It's 2020. A rough year.It's the holidays and everyone's stressed out.Let's treat one another with kindness and respect, yeah?Dear Wowhead, love your posts. I check the site almost daily. I appreciate all that you do.<3
The Maw is can be seen Did someone not decide between is visible and can be seen?
In this part of the article:Although The Maw is no longer receiving anima from Revendreth, the skybox retains its previous red and more ferocious tome.TOME should probably read TONE.
And you can found Kael'thas on the second floor of Sinfall Venthyr covenant, torturing him too.