Not sure what percentage of people this has happened to but consider this a PSA.
I usually win against the worst team on Legendary by 2-0 or 3-0 and beat the other three on Professional by 4-1, 5-1 or 5-0. Tonight I played my first game against an 80 rated squad on Pro and lost 0-1... then I played what I thought was a horrible game I managed a 3-0 win on Legendary against a 79 rated squad.
About 75 minutes into that game I noticed my through balls (Y on X-Box) weren't working - thought it was just button delay before that. I went to my controller settings and somehow they had been switched to "Two Button" instead of "Classic".
Now everything is back to normal but still have no clue how they got switched to begin with.