pasting with Clipboard PASTE USESEL on the folder background only works from the context menu. Using the button or Ctrl+V does not work on the folder background.
Dopus has been reinstalled. Only USESEL was added to the past (Ctrl+V) button.
That menu may use the folder tree's selection if the file display has no selection, but I'm not sure the same will happen if the file display's context menu is used.
It doesn't really make sense to have USESEL in a command in the file display background menu.