This week's Nightfall is 'The Insight Terminus'. The triumph associated with this Nightfall is called 'Capture Completionist'; it is found in 'Triumphs --> Nessus --> Strikes (bottom left). Since reset, my friends and I have been trying to complete this triumph, however we have failed every time we've tried. We have tried many different methods (for all 5 plates), ranging from capturing the points individually, as a fireteam, without jumping, not letting enemies halt the progress by entering, staying inside the circle even after it's been activated, walking onto the point, jumping onto the point, flawless-ing the entire strike, different difficulties, etc, but nothing seems to work. We have tried for a few days without success, so the only conclusion/assumption we can make is that it's bugged. Hopefully someone can help fix this soon or explain why it isn't working, thank you :)