Thanks for your report.
Though it looks like XP-only issue. So it does not really have a priority to get fixed.
Hi. In a "Server and protocol information" a have a little visual glitch - "Space available" tab don't show content immediately, to see something i need to make some clicks there or make some switches between tabs or something...
Not so much harm but still not good. :)
Little gif illustration attached.
PS: It's WinSCP 5.9.2 (few previous versions affected too) running on WinXP SP3 x86, webdav connection, both interface styles.
Thanks in advance.