i was underground in survival trying to ride my minecart back up and about half way up(i was deep underground btw) it randomly stopped then hurt my health by half a heart and kicked me off. at the same exact spot sometimes it will just go in reverse. ive tried multiple things including alot of powered rails but it still wont go up any further at the EXACT same level not just spot ive tried other ways. but the cart does go down no problem. lg motion 4g lte (android version 4.0.4)