Quote Originally Posted by Oakrest View Post
I definitely wasn't using that. Somehow my items were auto stacking without the need to auto sort. It was this way for years and only changed recently - I'm stumped. Is it possible my computer actually wasn't auto-sorting properly (i.e. bug/glitch) but could still stack somehow?

It's possible, but it's more likely that you are misremembering or were really using lightluggage.