Live View Inspect Mode not showing highlighted code in CodeView and CSS designer in wordpress site

Dw 2017 - Wordpress

LiveView Inspect Mode not showing highlighted code in CodeView and CSS designer in wordpress site.

I am able to hover over all my elements in DesignView, but view in codeView and CSS Designer, and DOM does not reflect the focussed elements,

like it does on my non-wordpress sites.  Everything else works great - all dynamically related files, live view source in CodeView, etc.  I can also "click" on elements in the DesignView, and then focussed element code is highlighted in codeView, shown in currentCSSdesigner, DOM, etc., but not when hovering over DesignView and "browsing" over the page.

I've seen this functionality work on tutorials, so I know it must be something with my setup or settings?