Incompatible with freeSSHd

WinSCP 5.17.7 on Windows 10, connecting to a freeSSHd server on Windows 7 over SFTP using key based auth. I can connect fine, but the folder appears empty. The current path shows up as /, which is wrong. You can't change directories manually, because WinSCP prepends all paths with /.

In the list of options for server shell in the connection properties, there's no way to specify cmd.exe, which would be the right one in this case.

Can you see the files using any other SFTP client?

Hm, tried with psftp, not really. ls gives nothing but . and ... If I try cd c:\, I get an error: "Directory /c:\: bad message".

freeSSHd reports the current directory as /, so one assumes its path system is somewhat unixy, but it's entirely unclear how do those unix-like paths map to the server's Windows style filesystem.

So it does not look like a WinSCP problem. Actually we do not have a good experience with freeSSHd.