Quaggan evacuation
I managed to restart the step by leaving and reentering works now
Just to confirm that this bug is still happening, it just happened to me today. New wave is not triggered after two quaggans were killed.
Professor James – Mesmer
Just ran into this bug today. Still. First time through it got stuck after the first wave of enemies, second time after the third wave. Finally on my third try I was able to finish the quest. So not impassable, but definitely annoying.