Abyss bugs (wont complete and scattered without node)

Abyss in Wetlands map won't complete. Zero monsters remain. I also had an abyss spawn on the opposite side of the map. I only have Stir the Swarm, and Dark Bloodlines allocated.

Screenshot:
https://imgur.com/a/vAfEU6s

Second abyss visible in the bottom of overlay map. That one completed.

bug report reference number: 453,442,228