Safe Search ratings not showing in Norton Private Browser

I'm using Norton Safe Search in the Norton Private Browser, but the security ratings for websites are no longer showing.  Has anyone else had this problem?  I remember there was a similar issue after a Chrome update last year and Norton had to fix it.  The Safe Search ratings seem to be working in other browsers.  It seems odd that the default search engine for the Norton Browser seems to be Bing and not Norton's Safe Search.