RG Live WotLK 3.3.5a

https://pad.rising-gods.de/p/5er_Instanzen_Rerun

• trash links in general, eg in front of first boss
• Watcher Gashra doesn't cast Enrage
• skittering swarmers near the first boss are unable to leave the water
• skittering swarmers have weird pathfinding in hadronox' lair
• anub'ar prime guard doesn't move
• anub should burrow every 25% (https://wow.gamepedia.com/index.php?title=Anub%27arak_(tactics)&oldid=2268515) , right now burrows at 66, 33 and 15% hp https://www.youtube.com/watch?v=AqA7Ou0tKF8

• Adds should always spawn from the doors, even if you haven't started the fight yet
• 3 Trashmobs (GUIDs 127380, 127402, 127379) should despawn (30s) after getting out of combat (used in several youtube guides 1 2 3)
• after the 3 trash mobs are pulled, 2 other groups should spawn
  Sources: 1 2 3

When your group enters the main room (the one after the bridge), you will notice a group of 3 Nerubians. When you engage them, 2 more groups like this one spawn behind the first one - it is important to pull the first group back, so you don't aggro all 3. Hadronox will be under you, fighting Nerubians.

in the videos you can see the groups coming down the stairs

cannot find a source that shows what happens when you pull Hadronox on his way up