Now(1.3.0.84) you need to hover over it and wait for the label to appear with the text, which means that the documents can be returned to the arsenal and you can get experience for it.

FIX-ME Add current design

I ask that the current method be supplemented with an additional icon to the documents themselves, which will indicate that experience can be gained for them.
Similar to the icon that indicates that the cartridges are tracer