Support Threads: theme-vantage

I installed the Vantage theme (free version). I created a Vantage child theme. Now when I turned on Customize -> Theme Settings -> Menu Search, it doesn’t show up in the menu. Are these options only available in the professional version?

When clicking on a menu item, change the tab and return to the site, the clicked menu item fades out (when hovering over it it re-appears for the hovering time) and only re-appears if I click on another menu item.