Do you use CDN? Clear CDN cache and check again. We made some changes of the portfolio filter (Ajax filtering and Ajax pagination) and seems your site uses the cached version of CSS and JS files http://prntscr.com/nd1gk4
Ok, had the CDN cache cleared and in WordPress Admin cleared the website cache. Portfolio page formatting now works. However still have at bottom of every page the WordPress comments area which was not showing prior to Upgrade 5.2. How do I turn that off? Thanks!