I was having the exact same issue. As a workaround, I had to just switch to a secondary character. I then went to the Dreaming City first and within my first 10 scorn kills, I had the Corsair down bounty to drop. The part that sucked was that I had to repeat all the steps I'd already finished on my main character. In the end I was able to get the Truth, move it to my main character, and level it up to meet my current light. Hope this helps some of you!