Thanks for your feedback. 5.19.4 has been released already.
Before posting, please read how to report bug or request support effectively.
Bug reports without an attached log file are usually useless.
. 2021-10-28 10:44:07.493 Using FTP protocol.
. 2021-10-28 10:44:07.493 Doing startup conversation with host.
> 2021-10-28 10:44:07.508 PWD
< 2021-10-28 10:44:07.508 251 "/XXXXXX" is current directory
. 2021-10-28 10:44:07.508 Getting current directory name.
. 2021-10-28 10:44:07.555 Retrieving directory listing...
CWD. I assume it was a typo on your side. If not, let me know.
2xxrange of response codes. Simply accepting
25xwould fix all cases linked in the bug report and still be 'nearly-compliant' with the RFC.
CWDcommand happens under the covers, this is a blocking issue with no possible workaround. This blocks us from using WinSCP at all.