Was playing splitscreen yesterday when my partner's game started glitching out. They were unable to jump out of the water and there was a massive glitchy hole where our house used to be. Everything was working fine on my screen.

To work around this I hit start and "Save and Quit", thinking a reload would fix the bug. The save icon came up and everything appeared to work just fine. When the game opened back up, I was standing where I was at the beginning of our play session... NOTHING had saved and we lost hours of play time.

I did 4 or 5 tests after that, making small changes to the world and saving and reloading the world. NONE OF THEM WERE SAVED.

For the sake of transparency, it's worth noting that this world was migrated from the Xbox One version. The worst part of all this is that we are no longer able to play the Xbox One Edition due to a DRM licensing error that Microsoft insists is my fault despite my disc being 100% scratch free and 100% recognized by every process except DRM. So now we're basically unable to play Minecraft at all. Wonderful.