Does anyone else have trouble with the post game mastery grade not loading?

Apparently if you click the client exit button it'll load up (then you can just select "No" to exiting). This should hold you over until they fix it.

sometimes. It will load for up to 5 minutes and even if I leave the lobby and I am in que for the next game I will randomly start hearing the exp bar going up an the clanking of mastery pgrades, its weird. Same with my letter grade.