The only frustrating thing about the fight was doing it over and over again, and ending my night in not being able to clear it. The reasons for non-completion were:
-The two bosses [the whole fight] resets randomly for no reason at any phase of the fight.
-Group members randomly at any phase of the fight get booted outside of the fight. When a dmg role gets booted out, it draws out the fight even longer----but the fight always seemed to randomly reset at any phase or tank or healer dies. If tank or healer gets booted out of the fight, it's an instant wipe.
-I tried this with four groups. Three of them I queue'd with using the group finder, did not have a tank. There was no tank role indicated and I even asked in the chat "so who is supposed to be tanking?" [because when we got to this dual-bossfight I had to ask this] The answer was: Nobody. I said, "Oh okay" thinking this was a normal thing that everyone was okay with. After doing the fight several times and remembering from when I used to play, holding agro was always an issue---and in this fight, I saw that the tanks were dropping agro everytime they were stunned. So I was like, aight. But then, more boss resets. The closest we got was both bosses were at like 10% health, and then they just reset.
-Tried abandoning the quest and reacquiring it under 'solo' settings, but it wouldn't let me. Exiting the game and restarting it let me do that. But when I got it, the 2nd boss I started hacking away at----I randomly reset to beginning of the flashpoint.
***You say this was the buggies flashpoint, or one of. I'm disappointed. Back when level cap was 50, Directive 7 was like this, and I was equally angry.