A recent version of Google Chrome update (61.0.3163.100 to be specific) has affected in-page anchor links on certain sites. Clicking on a hash link will not do anything when the expected behaviour is to take the user to the linked section with smooth scrolling.
These are sites that rely on older versions of jquery.localScroll and jquery.scrollTo for smooth scrolling after clicking on hash links.
The fix is to replace both those files with their latest versions.
Follow these steps:
Connect to your site’s server via FTP and navigate to theme’s
js directory inside the child theme.
Delete jquery.localScroll.min.js and jquery.scrollTo.min.js.
Upload both the files to js directory.
via Nick Cernis.