( Mincraft console edition is now more stable than before, thanks, it does crash however after one hour of gameplay in worst case and in best after 5 hours. It never crashes if you stand still )
Since the large update to XBOX ONE (mid november 2015), minecraft does not save the game if autosave is always on, when a crash occurs.
I did do a larger build in survival mode and had a pause and when I got back the game had crashed. Upon restarting the game build was gone and all the chests I got to the location.
However all materials was still in the BaseChests.
Gained from this was one stack of nametags that I had in my inventory (named big jim).
Lost all the effort.
Please save the game if the user want to do so! Or get a new save mode that force-save to the hard-disk in the console.
and I played online when it happened ie cloud on.
Marcus Sanler (ariana gaming)