Issue Excluding Normal Posts from Custom Reordering

Hey Team,

I’m encountering an issue with excluding standard posts from custom re-ordering. Despite using the following code, the order of some normal posts on the frontend still appears incorrect:

add_filter('pto/posts_orderby/ignore', 'theme_pto_posts_orderby', 10, 3);
function theme_pto_posts_orderby($ignore, $orderBy, $query) {
$post_type = isset($query->query_vars['post_type']) ? $query->query_vars['post_type'] : '';
if ( (is_string($post_type) && $post_type == 'post') || 
     (is_array($post_type) && in_array('post', $post_type)) ) {
    $ignore = true;
}

return $ignore;

}

Could you help me identify what might be causing this issue?
Any insights would be greatly appreciated.

Thanks a lot!
Judit