Running bionic-proposed here and still can't see software-properties (0.96.24.33):
root@ubuntu:~# dpkg -l | grep software-properties ii python3-software-properties 0.96.24.32.2 all manage the repositories that you install software from ii software-properties-common 0.96.24.32.2 all manage the repositories that you install software from (common) ii software-properties-gtk 0.96.24.32.2 all manage the repositories that you install software from (gtk) ii software-properties-kde 0.96.24.32.2 all manage the repositories that you install software from (qt) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1753333 Title: Using "Software and Updates -> Additional Drivers" to Switch Fails To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-properties/+bug/1753333/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs