bug - admin menu visible when admin child menus are not

Bug:

If a non-admin user (such as a "contributor") goes to the backend they do not see the configurations options & sub menus for the supporter status of the given site (as expected) but they do still see the supporter menu (with the green plus logo).

The menu item still links to /wp-admin/supporter.php and takes them to /wp-admin/?c=1 when access is denied.