Thanks for the comment. I fixed those bugs and uploading a new version now. The idea for the Shadow-items is cool and I would really love to make the idle-combat deeper. It would be nice to have some resistances, different attack elements and so on. But a jam game is a jam game so I ended up with a very simple system. First idea for this game was only a transmutation puzzle game, but I ended up liking the idea of some "combat" system to loot resources.
Edit: Bugs fixed for now.