Hmm, that's weird. I thought portable apps just bundled your version but despite all other things being equal, it looks like your own portable version is OK, but the portable apps version seems to ignore the logging setting.
I'll get onto the Portable Apps peoples! https://portableapps.com/apps/internet/winscp_portable
And apologies for thinking it was at your end.
I'll get onto the Portable Apps peoples! https://portableapps.com/apps/internet/winscp_portable
And apologies for thinking it was at your end.