On my world i have an item transport system with minecart. I've got some weird behaviour with said track. I noticed the cart got stuck on a curve (only on one way). breaking and replacing the rail (and blocks beneath it) didn't help, also replacing the cart. blocking of the path made the cart shoot out in an random angle (mostly towards the block or in an ninety degree angle). reloging did nothing. closing the Game all together, and going in again fixed the problem, but duplicatet the cart. Since i don't know, what caused the problem i cannot reproduce the Bug.