My exotic bounty is bugged after completing 2 different quests, I have to kill 500 people in crucible using void damage. I have been doing this, but the number isn't consistent. I've gotten it up to the 50s three times now and the number gets knocked down. After a match I will check the bounty again, and it'll be down even more kills though I killed even MORE people with void damage. Help? I want my exotic...