Simply put, when you enter competitive (either solo or grouped), you have the option to ban one map. Now, the main problem with this is how to counteract that every player is just going to choose Fracture as their banned map every time they...

I saw Riot's tweet about fixing the issue a few days ago, and that the patch went in to give the proper rewards. Wasn't sure if they were given out all at once or it was being rolled out.