If playing on "Old" world type, if crash happens all progress is lost. Also, if I am playing for a long time, example 1 h or 2 h, and then "save and quit", everything is as it was when i joined that world 2 h ago. Example: I am playing on a world, I "save and quit", and then re-enter that world without closing the game itself, everything is lost. Happens even when I "save and quit" and then completely close Minecraft. This issue started from the time we got 256 height limit, might be the issue with how the world is compressed or how is it saved. This also is happening on "Infinite" world type, but strangely a little less often.

P.S. File storage location is external, not application, if that has to do with anything. Didn't try it on application either way.

Device: Samsung Galaxy Note8

Model:SM-N950F