I have already exited the Sinkhole area, I can not re enter it, it won't let me but it still has the objective "exit sinkhole" even though I already did and it will not progress. Even stranger Raz and other npc is there to greet me every time, I can even follow them and listen to the end of quest dialogue but the objective won't change from "exit sinkhole".....

Is this a known progression blocker bug, do I have to start quest all over again and abandon to reset?