Sslanis Militia: The Bloodletters (Part 2) Bug?

I reached the part where I go into the Cave of the Winds and finished all the Fallen Spirit's tasks, but in the quest objectives for the main quest it says I still have to finish his tasks? I got three tasks, find the birthing chamber and then kill the sacs, kill myloc workers and shamans, and find the chamber of skulls and get 4 bones. Is there more and it hasn't given me a quest update for some reason, if not what am I supposed to do next?

This is a known issue that will be fixed on next delta. Please send in support ticket http://support.istaria.com with your character name and shard. The quest can be advanced to the next step manually so you can complete the remaining parts.

Ok thanks, I'll do that