Salient 8.0 Child Theme Issues
In Salient 8.0 the Modernizer.js file was updated for which a slight change in header.php was made .
In Earlier version there was no class="no-js" added in the html tag on line no 4 of header.php file .
Therefore if you are using a header.php in a Child Theme you have to add the class="no-js" attribute in it for it to work without any issues.
Note: This addition is only needed if you are running a Child Theme .