Hi, When creating a new user using samba-tool user create, there's no argument for setting the UNIX home directory (unixHomeDirectory), only --home-directory (homeDirectory), which is an UNC path used by Windows. The other RFC2307 parameters, like uid/gid, work just fine, so I guess this is just a matter of creating a new flag and passing it through.
Closing bug report, this was fixed a long time ago.