Looks like there’s an issue with tabs. When viewing created tabs, you see the first tab active but content for both tabs. Click either tab and the content disappears.
I was able to reproduce this in the frontend only. The cause was related to the recent shortcode rendering function changes (for the upcoming advanced feature extension) and a minor difference in the way that the Tabs/Tab elements handle the ID. This is now resolved in version 1.6.5.
Please try re-saving the page in Tailor and let me know if that does the trick.