No, this is a major, major bug. No player should ever have to worry about lost data due to bugs. That should have been crushed before it was released. This attitude where devs treat post-release as a beta trial is wrong. Have a beta period, smash the bugs, then release a game where players don't have to worry about that crap.

I theoretically paid $20 for the game. I shouldn't have to worry about losing hours of progress every time I quit the game. I didn't pay to be a beta tester(especially since it's not advertised as such, like Minecraft was when it was being sold in alpha/beta phase).

If this were to happen with any other game that you bought from a store, would it be just as easily shrugged aside? I doubt it. I think players are sort of blinded by Minecraft's weird climb to fame where they got so used to playing Alpha/Beta that they think this sort of thing is okay. I had the same feeling when Minecraft went "full" yet was still so chalk full of bugs. Hell, Minecraft PC is STILL full of an amazing amount of bugs, yet it people seem to just ignore them... but any other game with a bug list as long as Minecraft? Think it'd fair so well? Doubt it. This is just my opinion on a sort of different subject, that I wish players would open their eyes and realize that once a game is advertised as a full product(more importantly, being sold at full price), this whole "it's a bug expect it to be fixed in the future" **** shouldn't be tolerated.