I can observe the problem in an up-to-date cosmic VM. The interface is correctly connected, but gnome-software fails to display the switch in the correct state. Killing gnome-software "fixes" the problem. So it looks like the status of the permissions are cached in the running instance of gnome-software, and not properly updated when changing them from the UI.
** Package changed: chromium-browser (Ubuntu) => gnome-software (Ubuntu) ** Changed in: gnome-software (Ubuntu) Status: New => Confirmed ** Summary changed: - Chromium snap "Removable storage devices" permission fails to enable + Status of interface connections not properly updated in the UI -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1806697 Title: Status of interface connections not properly updated in the UI To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-software/+bug/1806697/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs