Found this interesting bug.. in the live client!
I made a snapchat video (yes, i know) when this happened. I was finishing a game (Teambuilder) in which we won. And the interesting this is that the end game stats didn't show the same game... They showed a 3v3 game and it said "blue team wins". at the Graph section, there were a numerous amount of DIFFERENT champs. Like 6-9 of them. This happened 22:13, 2015-12-03. I would like to send the video straight to you so you can have a more clear view of this.