Enhancement: WinSCP has no means refresh map drive list when missing drive letters don't appear

When running on Windows 7 and PC map drives go missing from GUI list, there is no way to refresh network drive list, except to reinstall setup EXE. This occurs even on the latest release 5.9.4

How does it happen that the drive "go missing"? Can you give us details?

Also I cannot imagine, why would you need to reinstall. Even if the drive does not appear automatically (it should), mere application restart must help.