Drag & Drop from WinRAR doesn't work

I often want to drag & drop files directly from an archive with WinRAR and the plus icon is displayed in the WinSCP window but when I release the mouse button nothing happens. So I always have tounpack the archive to a local directory and after that I can upload it. Can this problem be solved?

Basicaly WinRAR can drop files to Windows Explorer only.
So there's no solution.

Dragging From WinRar to FileZilla works fine, so maybe there IS a solution.

This issue has been added to tracker.