Crashes after removing item from forge/kills me/resets game

Often when removing items from the forge, specifically fuel items, the game crashes.

My first experiences with this were only annoying, when I was learning the basics in easy survival mode. When I started a new game and set it to hard (immediately after the world spawns,) this error became much worse.

After removing an item from the forge, the game crashed. I then logged into that game and found myself apparently underground, taking 1/2 heart damage per tick until I died. When I respawned, the world had been reset. The map appeared to be the same but everything I had done to that point had been undone.

This has happened twice.

My easy playthrough so far appears unaffected but I'm not sure if I'll go back to it for fear this could happen to that one as well.

Please fix, I've lost enough time to consider the game unplayable at this point.