I didn't see any other threads regarding this, so here goes. Harrow's End heroic, Drinal, randomly NOT having an appearance for one or more people in a group. I know theres been random work arounds that sometimes work; i.e. toggling alt-models in the options, but it doesn't always work. Why is it, this far into the Xpac, THIS is still a bug?
This type of bug has been around forever, especially any mob that is positioned on a platform. Your best bet is to just use /soga_models off or on depending on if you use them or not to make the mobs appear.
I can verify this happens on Guk too. Toggling SOGA has not always finishing it... though running around his platform like a crazed chimp seems to work if he is just "invisible" instead of "despawned"
I WILL VERIFY GUK ALSO I PLAY ON THAT SERVER. IT WILL SOME TIMES GO INVISABLE IF YOU WIPE, ALSO CAN YOU MAKE IT SO IF YOU ACCIDENTALLY JUMP ON THE PLATFORM YOU WON'T FALL THOUGHT???