[Client] Visiting another summoner's masteries in Team Builder gives you their masteries.

I went into Team Builder, didn't select anything. Visited another summoner's profile. Viewed their masteries. Pressed home button to get back into Team Builder. Selected champion, role and lane. Looked at masteries drop-down menu. All the masteries listed are those from the page of the summoner I visited. Clicked button to edit masteries (in Team Builder). Takes me to my masteries, but I can't exit the masteries screen with either the X at the top or with ESC. Back to Team Builder Stuck on masteries screen After logging back in