www.google.com bypassing web filtering

Hello.  

We are trying to implement web filtering for a particular server where we only want the server to be able to access a single URL.  We have Web Filtering working, except for the fact that in Chrome when you go to www.google.com it goes to the site.  This is bypassing both the wildcard blocking rule and the specific blocking rule for www.google.com.  Not only does it go to the page, but it also allows you to search.  clicking on search results fails, but you can still see results as well as the image tab.  Oddly, going to images.google.com or drive.google.com or www.google.fr all are blocked as expected.  

Is there something I am missing here?