mr wrote:
I click on the "OK" button and the Synchronization windows disappears.
The timetamp synchronization should start then. Well maybe its too quick to be even noticed, but I doubt it. Can you post a log file?
But perhaps WinSCP cannot read the daylight saving status of FreeBSD 's ?
WinSCP does not care about it. Timestamps are sent in UTC format, which is unaffected by the DST. Maybe your server fails to adjust it.
Could you make this new Unix-style approach to Daylight saving time (client does adjustment) optional?
It is optional. Just select "Server adjusts DST". However it is against the SFTP specification.