Dear Mojang,

   While playing with a friend, I found a glitch in the teleportation system. I was mining in a cave that I found, and my friend was fishing on the surface. We have been using cheats in our survival world, and I needed to get up quicker, so I teleported myself to her. It immediately said that I died and said that I fell from a high place. This was odd because I wasn't even at a high place. I lost all of my inventory, and her and I went to go find it, with no luck. We couldn't find it anywhere, even the place where I was teleported at. This has happened to me twice, and my friend once, with a total of three times. 

From,

A concerned player