WinSCP and z/OS FTP Server with TLS, access MVS dataset failure

WinSCP will add a leading "/" to the file by default. It makes accessing MVS datasets (not USS) failure in z/OS.

For example, I try to download USER01.TEMPLIB(TESTFTP) in z/OS to TESTFTP.txt in Windows.
After "cd TEMPLIB", the current directory changes to /'USER01.TEMPLIB'. The desired directory should be 'USER01.TEMPLIB' without leading '/'.