Losing LP for a win
I just won a game and I was at 53 LP and then my computer froze and I logged back in and the game was over and I was at 38 LP. When I disconnected it was at the 24 minute mark, I went into match history and the game was only 26 minutes, so I was gone for about 2 minutes and I lost LP for a win? Can you please explain why I lost LP for getting a win?