Got my first perfection today, was rather encouraging and representative of the last six hours or so of games

I've had a real turn around on the game today. I think the turning point was when I realized the DMR is not a death star. The BR was the true death star and it's not around anymore, but I just have to get used to that fact instead of trying to use the DMR hoping for a BR-like domination.
Speaking of my perfection, the match said I had 15 kills, 0 deaths. In the game it popped up the medal for perfection and as I said the post-game report said I went 15-0 but didn't display the perfection medal. Anyone else have this problem?