Using version 1.2.1 for Windows, in this case Windows 11. Adding an directory at "upload". The documentation states: "Every directory underneath directories you list will be shared". Sadly not true, I have to add each subdirectory. One by one, since mass-selection is not possible.
Actually I found the reason why it seemed not to work:
http://gtk-gnutella.sourceforge.net/en/?page=faq#up1
The Wildcard is actually
--all--
and not all or "--all--"
So this "bug report" is invalid.