I think I got this solved.
I have created the fields with the Admin user (user_id == 1) and the field appeared when I modified the query to include the Admin user_id. Here is the code I’m using now to prevent other users from seeing others posts and displays the fields on post.php page.
add_filter('pre_get_posts', function($query) {
if ($query->is_admin) {
global $user_ID;
global $pagenow;
$allowedPages = ['post.php', 'post-new.php', 'admin-ajax.php'];
if (in_array($pagenow, $allowedPages)) {
$query->set('author__in', [$user_ID, 1]);
} else {
$query->set('author', $user_ID);
}
}
return $query;
});
I have exactly the same issue. Would be most appreciated if a solution would be provided.
Cheers!
