Static front page as parent of with child pages?

Are you just outputting the pages for the navigation with wp_list_pages() or a similar function?

It might be better to use the WordPress Menu feature and create a menu for the navigation, then use wp_nav_menu() to display it.

Alternatively, instead of setting a static page in the backend you can edit (or create) the home.php theme file and query the specific “About” page you want from within the template file, which shouldn’t cause the problem you are encountering.