Happened to me an hour ago. Â MCPE 1.8 iOS
Loaded a game where my spawn point was my bed, but the game reset my spawn point to the original spawn point. Â There were some blocks at that point, so it moved me to on top of those blocks, but then killed me claiming fall damage (no fall occurred). This happened in an infinite loop of respawn-die.
It seems to depend on the length of time you press the screen while feeding, much like transferring items to a chest.
The world edge doesn't seem to make a difference in 0.5.0 on iOS, but the 3D Person View seems to have an extended range of 3 extra blocks at all times in both survival and creative.
Had this issue twice this week on iOS PE 1.8. This time I lost my mule far away from the origin point. 😞