User blog comment:C.Syde65/Introducing the New Site-Wide System for Non-Site-Wide Features/@comment-26408254-20170813070859/@comment-24258073-20170813081732

Yeah. Fortunately the Gadgets have been enabled, since there were some CSS and JavaScript enhancements that weren't allowed to be made site-wide, since the customisation policy changes. The gadgets can be enabled here.