1. Go to Content Management > Configuration Page > remove the value in the 'Search page' field:
   
2. Launch the out-of-box CMS site: https://<instance>.service-now.com/ess
3. Enter the following to perform a global search from the CMS header: test
   
4. Notice the 'Search page' specified within the CMS site record is displayed:
   
5. Perform another search using the search widget and a blank page is displayed using this url because it's looking at the 'Search page' in the Content Configuration record:
   /ess/view_content.do?sysparm_sys_id=?sysparm_search=test
6. Expectation is that it should display the 'Search page' from the CMS site

Remove the base system Search Results (Global) content block programmatic record and import the attached version in XML format.