Loss of inventory

I'm not the first year playing Minecraft and I was always surprised that the game could happen so unexpected that any player could put in a stupor. At this moment, which is repeated not for the first time in my game, I have a game that, with the help of your mistake, steals not the first horse from the best and I would like to draw your attention to this error, since the game is not convenient, and hits the consciousness of the person who was robbed. I would like you to resolve this issue soon.