From the link: "We are aware that some players are not receiving credit for Bounties that involve killing a Boss at the end. For these Bounties, you will need to deal damage to the Boss within the last 30 seconds before the Boss is killed in order to receive credit for completing the Bounty." While I'm sure this is happening to some people, I have yet to have it happen to me at all in over 400+ hours of gameplay (granted, not ALL of that was spent killing bosses). I've been in boss fights (Phogoth and Sepiks, for example) where fellow fireteam members are focused on the adds instead of the boss and the bounty pops for them... Instead of telling us to deal damage within a certain time window in the encounter, what about the problem being fixed to ensure if someone contributes to the fight at any time, they get the credit deserved?

Yeah, some of those specific target bounties can still bug out. Were you fairly close to the player that got the "kill" shot (lag can make it seem like you got the kill, but really didn't)? I remember that one time Queen's wrath was around, there was a daily bounty for kill 3 devil walkers. People would commune in the Divide just waiting for the public event. But some times you wouldn't get credit for it even if you were shooting it the whole time. There was a suggestion that you have to be "close" to the guardian that gets kill credit, so maybe the strike boss bounties are the same way.