I went to finish “A Warrior’s training”, and the quest window didn’t close, even though I heard the quest completion noise. I kept on clicking on complete quest, and nothing happened. I closed out of the window, and there was no question mark or exclamation point over his head. I went away and came back, and there’s still no exclamation point for the next quest in the chain. This is an important quest; I don’t get sunder armor or defensive stance unless I finish it.
I would expect the quest turn in to be atomic - either I turn it in or not. I did spam click complete; would that have created a race condition?
The character is Marthtenauer on Pagle-US.