Left panel shows any folder of a smartphone or camera (checked with Canon Eos 450, Lumia 650, Alcatel OneTouch).
Right panel shows any folder of any hard disk or USB pendrive.
I select any file by right clicking the mouse or by ctrl+C (or ctrl+X) and paste by ctrl+V.
Everything is ok.
When I use the direct keys (F5 or F6) or those in the picture, it fails
