When using an item (e.g. eating beans) you can swap this very item with another one in your inventory. You can however NOT move it into an empty slot (see attached image).

This does not make sense. Either you can swap/move the item in use regardless of another item/free slot OR (what I would prefer) you cannot swap items in use at all (this however is already true for items like the .45 )! {F29640}