This was due to the fact there were two entries for different architectures for Steam. One for x86_64 and another for i686. Untoggling the check box caused both to appear as they both had the proprietary class.
I've committed a fix to address this. https://bitbucket.org/lah7/ubuntu-mate-welcome/commits/08819c6444b62d5642c5a64f1bebef9ab3365696 ** Changed in: ubuntu-mate-welcome (Ubuntu) Assignee: (unassigned) => Luke Horwell (lah7) ** Changed in: ubuntu-mate-welcome (Ubuntu) Status: Confirmed => Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1490108 Title: ubuntu-mate welcome shows steam twice To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-mate-welcome/+bug/1490108/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs