Web content filtering and indicator aren't working on third party browser

This was working correctly, but now Google appears to have changed something in Chrome.   Now the behavior we are seeing is that if we type in the full address such as dropbox.com, it blocks correctly (we have it scoped/unsanctioned.  But if you do a search for Dropbox, and navigate there via the search results, you can get to the unsanctioned sites.   Our Microsoft Defender Browser Protection is still enabled on Chrome with no changes there.  We are going to open a ticket with Microsoft but suggest others do too, so we get some traction.