This is happening to me too. I made sure to submit a bug report as this has killed my run!
I knocked out Minthara to see if it'd recruit her, I'm not too invested in getting her in my party I just wanted to see if it'd work like I heard. I killed all the other goblin leaders, long rested, and went to turn in the quest but the quest is stuck at "Kill the goblin leaders" and Halsin is still in the jail and telling me how important it is to kill the goblin leaders. I even took him around as a bear to show them their dead bodies but he still doesn't believe me hahah.
Oddly, the Save the Refugees quest says I should talk to Zevlor because the goblins are defeated and the tiefs can safely return to the road.
Also, if it matters, all the tiefs are in their normal locations, they haven't gone to the front of the emerald enclave the way they do when the quest is completed normally.
