manrax

Ok after many tries I managed to do it.

If anybody else wants to archive the same thing here’s how to:

You need to add the following to the functions.php file of your childtheme:

// REMOVE HEADER REPLACEMENT ACTION
function child_remove_parent_function() {
    remove_action( 'wp_head', 'hemingway_rewritten_featured_image_headers',999 );
}
add_action( 'wp_head', 'child_remove_parent_function' );

Manrax

Im sorry for the misunderstanding but your solution removed the wrong featured image. I wanted to prevent the Featured image to replace the default header image.
Even on a single post page I want the header to be the same as on all the other pages (like this https://develop.sevenoaks-guild.com/forums/)

Thanks for your help,
Manrax