I was wondering if my Zodiac Quest could be bugged?

I have a theory and was wondering if anyone else has experienced it too. I got 3 drops and one day I abandoned the Zodiac Quest (Method In His Malice) by mistake. Now I cannot get a drop from Copper Belt HM. I've run it 70 times.

70 times seems a bit excessive. With Heavensward coming out soon I think this matter should be resolved.