Found a, well maybe it's a glitch I am not sure but it is something.
I was playing Bash The Haggis and had another game open in another tab.
I closed other tab, and continued to play Bash The Haggis.
When I was finally happy enough to submit score I did so, in when doing so..... It submitted My score to the game that I had closed in other tab.
Not knowing what just happened, I thought I'd go inspect what had just happened a little further.
My findings were that when playing a game, and then opening another game in new tab, then closing new tab.... The score submitted from game goes to game from closed tab.
Does that make sense? Didn't to me, but it happened.