In the last two Ruins of Ahn’Qiraj raids I ran, including only a few minutes prior to this post, on the final wave of General Rajaxx encounter, all the dead waves respawned. They were then pulled and wiped the raid. To my knowledge, there were no signs of evade bugs that caused this.
If anyone has had this happened to them, include your example here. Hopefully Blizzard will address this bug. 
I got a video of ours from the other day. will render and post now.
https ://streamable.com/0b1gu9
Encountered the same issue today. Frustrating.
Same thing happened to our group just now… I know AQ is supposed to have bugs, but can we get an exterminator?
Same just happened to us, wiped, now the NPCs arnt respawning
Same just happened to us for the 2nd time in just over a week. This is some stupid crap that just shouldn’t happen. This is a silly waste of time!
what causes this bug?
This has happened in 4 of my runs, it’s absurd this isnt fixed. Absolutely cancer to have all 8 waves run at you at once because they bug respawn.
Happened on our run today as well
Right as the 4th wave spawned, we got everything respawned and wiped instantly. Not sure what caused it.
Issue still persists, just happened for us.
Just happened to us as well. Frustrating
Yup happens all the time still, Moam also evade resets his health very easily as well.
3rd time THIS WEEK. Wave 8, nobody on the rocks. All groups respawned and wiped the raid. 20 minutes just gone waiting on NPCs to respawn. This is not competence. Do better.
2 of out of 3 AQ20s I ran encountered this bug. No idea what causes it.
The boss was literally running to where we tank it and the adds respawned and came after us just now
what a joke
This is still happening with no clear cause. We run AQ20 twice a week, and it’s always 50/50 on if the waves will all respawn after wave 4. This is insane incompetence on the dev’s end.
Tell people to stop standing on the brown hill like mound. Never had an issue with the encounter and every time we’ve done it we’ve been told not to stand there.
We had it happen twice in a row with no one standing on the mound. It’s not the cause of the bug, and trying to replicate perfectly has been unsuccessful. It’s seemingly random.
We just had it happen to us again. No one was up on the rocks, everyone was on the flat part directly in front of the door.
Cleared all waves just fine, and when Rajaxx came, he pulled the 2 guards on the right (on the way to Moam) with him…so many possible issues with this fight.