Open a browser window and resize it horizontally until the NoScript icon is pushed off the toolbar. Navigate to some page with scripts and open the NoScript popup menu.
Results: The right half of the popup contents is empty. The URLs of the blockable domains are not visible.
Screenshot:
Version: 10.1.2 on OS X El Capitan
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:57.0) Gecko/20100101 Firefox/57.0