Sirus DISAPPEARED

Sounds a lot like when people kill uber elder but resurrect before he finishes dying. Are you guys using damage over time or leaving when he is in the process of dying? If it's coded the same as other endgame bossfights, if you aren't in the area when he dies and drops loot, you don't get credit or loot. By design I believe.

Same here, Sirus disappeared during the last phase as he was doing the "everlasting fire" thing.
Bug report is 1 255 936 346.

I can't make a screenshot because it makes the game crash btw.

Sirus disappeared in last phase, can't find him anywhere on map. Relogged and still nothing.

Sirus disappeared in the last phase. I died and entered the zone after 1-2 of his abilitys he disappeared.

Same as above. Sirus disappeared in the last phase. It seemed like he went into the storm and he is nowhere to be found.
Edit: the minions are trying to shoot at something in the storm in the left bottom corner.