Noticed a mastery page bug

Hey y'all.

So to start it off whenever I or somebody else (assuming its happening for everyone else) is in champion select before the game starts I noticed a minor bug that might effect the game or might just be a visual bug when picking your masteries.

What actually happens: Player in champion select, chooses Yasuo as a champion, picks his Yasuo champion masteries, but wants to edit them it auto locks into the last champion you've played last game when wanting to edit the Yasuo mastery page. -Say last game you played Katarina.. it would still be visible as Katarinas masteries when editing yasuos page.

I haven't noticed the mastery page switching over on me yet, however this bug could effect the game in someway.. not exactly sure how since I'm no coder geek.