I saved the game with items stuffed into the 6 crafting devices and my lutefisk cube as extra storage space. When I loaded the game, some of the item stacks had been shuffled around in these extra storage locations, including a mace moving into my lutefisk cube and my stack of lutefisk moving into the result slot on my ingot press. Similarly, ingredient slots in my other crafting devices seem to have moved around and in some cases moved into result slots of crafting devices. Also, at the same time, my stack of 6 omelettes disappeared off of the first slot in my belt (the shortcut bar of items at the bottom-left of the screen). I am not sure, but I think they may have been added to the stack of dire sandwiches I had in my 3rd belt slot.
i've seen the shuffling container stuff. seems to only happen to me if i leave my crafting items open while i save and quit...
There's a fun secondary effect associated with this bug: if something non-Lutefisk lands in the Lutefisk Cube, you can create more of those things by dropping any other item on top of it. I had one game where I made a stack of 250 Bolts of Mass Destruction that way.