As someone who has nearly 40 champions above mastery 6, I like to see what grade I got on a certain champion in my past games so I can shoot for those tokens. I've noticed in my match history though, sometimes it only shows a grade, or only shows my xp, not both. As you can see in this screenshot alone 2 games show both score and xp, 2 games show just score, and 2 games show xp. It feels really random and since before it used to show you IP and score all the time, I'm guessing this is a bug. Not sure if this has been noticed or reported before, but I'd really like to bring it to attention and hope it gets changed.