Thanks for the report. This is indeed a synchronisation issue between users-admin and adduser, the tool which is responsible for actually creating users. I've filed a bug in Debian so they make adduser allow dots in usernames.
Thanks for the report. This is indeed a synchronisation issue between users-admin and adduser, the tool which is responsible for actually creating users. I've filed a bug in Debian so they make adduser allow dots in usernames.