Meta Box

Hello, I tried that previously, before creating this post. Just to ensure I wasn't crazy, I went back in and set it up and included "none" in the sanitize advanced settings - still doesn't output the code as expected.

Again, with sanitize: none, I have this page: https://lyonmentalhealth.com/email-archive/second-post/
The first tab is the Rich Text field with sanitize none, the second tab is the WP Content field, both using the same code, both coming from the same form (I added 'title, content') to it. I don't know the intricacies of how WordPress ultimately passes that data along, but it just shows that even when going through Meta Box, the desired outcome is possible, but something isn't quite right as is.

I know this isn't fully related, but when I tried something similar using Bricksforge's Pro Forms to then make updates to the post, that's when it 'broke' the code upon a second submission. I was hoping that MetaBox would more or less permanently not sanitize the code so that on every submission, either to create a post or update it, the code would remain intact for what was passed through it. This doesn't appear to be the case, even for the initial submission.

Here is a brief walkthrough of the issue and the steps I take and what ends up happening. The first screenshot is also what the user is left seeing after I edit their post:
https://note.sapphirewolf.co/l/A6jkDd

Thanks for the quick update, Anh! That appears to have done the job. Much appreciated!

Hmmmm. Okay, (un)fortunately I've isolated the issue. When I activated Squirrly SEO, it broke the media upload custom field only. I'm not sure why that is.
When I deactivate the plugin, the media field works as expected. I'm wondering if you know of a workaround. I know it's technically a Squirrly issue then, but if you have experienced this before and know of a viable solution where I can inject some code somewhere to bypass that issue, that would be greatly appreciated. Thanks again!

Thank you! That worked like a charm. I'm not sure if this is the most optimized code, but in case anyone stumbles upon this, here is the final PHP code for the desired result:

<div>
add_action( 'rwmb_frontend_after_save_post', 'update_bio_post_title');
function update_bio_post_title( $object ) {
	
	$post_type = $object->post_type;
	if ( 'bio' == $post_type ){
    $post_id = $object->post_id;
    // Get the field value
    $my_meta = rwmb_meta( 'counselor_full_name', '', $post_id );

    // Get the post title
    $my_post_title = get_the_title( $post_id );
    
    // Prepare update post
    $post_slug = sanitize_title_with_dashes ($my_post_title,'','save');
    $post_slugsan = sanitize_title($my_meta);
    
    $my_post_title = array(
        'ID' => $post_id,
        'post_title' => $my_meta,
	'post_name' => $post_slugsan,
    );

    wp_update_post( $my_post_title );}
}
</div>