I did a brief look at another post:
And remembered another good thing to request:OK I see. WinSCP does not show the plus sign, unless it know that the directory contains subdirectories. And it does not know that unless you have browsed into the directory before. Otherwise it would have to load whole tree on login, what would take lot of time.
Currently, in order to show the subfolders of a main folder, we need to open the main folder, which may contain many files. If WinSCP show the plus sign for folders not-yet-opened, could it just list the subfolders instead of needing to load all of its contents, couldn't it? It would be a good time saver for very big folders.
For empty folders, it could just remove the plus sign after we click it.
And I take a time to remember my old suggestion:
A workaround for that is the use of the Shift key to open a new session... but, well, it's not a real fix...Do you mean that you have one session already opened and while another session is being opened, you want to be able to work with the first one. Right?