[1.5.2] Can't complete "Storming the city"

[moonpie]

So I was having some fun on my temporal warden, triggering one anomaly after the other in derpth while fighting the lightning tornados. After I defeated the last one though the quest didn't advance, leaving my character in an empty city, still having the quest up.

[Zeyphor]

check the water surrounding the town
I'd imagine gwelgeroths don't breathe