Always select from 1 custom field group's entry

So AI seems to have fixed the issue (for now). This is a temporary solution unless someone more knowledgeable has a more refined solution.

// Filter the dynamic tag values specifically
add_filter('elementor/dynamic_tags/custom_field/value', function($value, $settings, $tag) {
    // Only modify if we're in a header template and the field matches our topbar fields
    if (strpos($settings['key'], 'topbar-') === 0) {
        $header_post = get_posts(array(
            'name' => '18318',
            'post_type' => 'top-bar-message',
            'numberposts' => 1,
            'post_status' => 'publish'
        ));
        
        if (!empty($header_post)) {
            $value = get_post_meta($header_post[0]->ID, $settings['key'], true);
        }
    }
    
    return $value;
}, 10, 3);