the first event in the raid instance Crystallos, wing air, Aerius Windfury is bugged, the event just stops working and the mobs remaining up can no longer be attacked. Each time this event bugs we are forced to re-get the dz, clear up, and try it again and it appears to bug 3/5 times which results in massive time wasted for all guilds, this is happening on both Fippy and Vulak.
Either this just happened within the last patch or your raiders were using levitate / illusions that give levitate (known to bug the event). TFO has killed this guy plenty of times and hasn't seen this bug once. We'll know for sure tomorrow when we kill him I suppose.
No illusions, no fd, no levitate. Still bugged. Last one or two clouds keep going inactive and never re-activating.