Correct, this has a reported bug (though not in the proper place) since 2019 https://forum.snapcraft.io/t/how-to-add-extra-user-to-group/13321/7
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2077883 Title: usermod silently fails modifying group membership for extrausers To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/shadow/+bug/2077883/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
