The group I usually Timewalk with has been having horrible issues in getting Hadronox to act normally - meaning, kill mobs at the top of the spiral slope in ‘Hadronox’s Lair’, then have Hadronox climb up the slope and fight.
Hadronox does not respond to anything this week other than direct attacks and kiting. Killing the mobs does not attract them to the main room. The mobs merely keep attacking the players until ‘zerg’ is reached, and the party wipes.
If Hadronox is kited to the top by sequential individual sacrifices with desperate running back before full wipe, then the boss can be killed successfully, but it’s a dreadful and painful procedure to get the spider to cooperate.
Googling shows this seems to be a long-term issue, with the other problem being Hadronox getting killed by the mobs instead of the players and derezzing with no loot provided. (My group hasn’t encountered that so far.)