Meta Box

Hello,

How do you add the variable $object_id to the email? I use the sample code below to add the object ID to the wp_mail() function and use the plugin WP Mail Logging to log the email and the object ID is logged correctly.

function set_sticky_status($object_id) {
    $to = '[email protected]';
    $subject = 'The subject';
    $body = 'Object ID: ' . $object_id;
    $headers = array('Content-Type: text/html; charset=UTF-8');

    wp_mail( $to, $subject, $body, $headers );
}

https://wordpress.org/plugins/wp-mail-logging/

Hello,

I don't see that issue on my demo site, here is the screenshot https://imgur.com/oiQEvKY

You can try to deactivate all plugins except Meta Box, MB extension plugins, switch to a WordPress theme and check this again.

Hello,

You can try to use the Classic Editor and use the code below to output the variable $object_id to see if it works:

function set_sticky_status($object_id) {
    echo $object_id;
    die('test12345');
}

Hello,

The field "custom_html" doesn't save the data and it doesn't have a field ID. It is used to display an instruction for the user in the admin area. I will inform the development team to remove its field ID in the builder.
Following the documentation https://docs.metabox.io/fields/custom-html/

Hello,

I see the slowdown issue of the field group when having more custom fields. I will forward them to the development team to check them and improve the performance.
Regarding the group data, it works as the standard serialized data of WordPress and is a core feature. There isn't an option to change the data format to JSON. If you want to search and replace the value in the DB, you can use the plugin https://wordpress.org/plugins/better-search-replace/ which supports serialization.

Hello,

If there are two meta boxes, you should have two relationships in the code or in the builder. Please recheck this and remove one and recheck the error in the post screen also.

Hello,

It looks like the issue in this topic https://support.metabox.io/topic/js-call-mb_frontend_form-shortcode/
You can create a button and redirect the user to the frontend form page to edit the post.