[CLIENT] Getting no experience for playing the game

I have absolutely no idea how to reproduce this. It just started happening to me a few days ago, for seemingly no reason whatsoever. Basically, whenever I play a game, the post-game screen says I gain experience, but that experience is not updated. I'm stuck halfway in level 47; I've played three games with two First Wins and my experience hasn't changed.

The interesting part is this: my post-game screen stays updated! According to my post-game XP, I am 1/4 of the way through level 48. However, my profile is stuck halfway through 47, and I have not received a Champion Capsule for my level to 48.

EDIT: The 8.1 patch fixed this bug, but I never got that 1K XP. Rip. I'm getting XP for wins now, but I'm still at level 47.