Hi Martin,
The field select_advanced
works as well with the extension MB Admin Columns. I also do not see that on my demo site. Can you please share the code that creates the fields?
For example, this sample field shows the value in the admin column
function your_prefix_function_name( $meta_boxes ) {
$meta_boxes[] = [
'title' => __( 'Post Meta', 'your-text-domain' ),
'id' => 'post-meta',
'fields' => [
[
'name' => __( 'Select Advanced', 'your-text-domain' ),
'id' => $prefix . 'select_advanced',
'type' => 'select_advanced',
'options' => [
'a' => __( 'A', 'your-text-domain' ),
'b' => __( 'B', 'your-text-domain' ),
'c' => __( 'C', 'your-text-domain' ),
],
'multiple' => true,
'admin_columns' => 'after title',
],
],
];
return $meta_boxes;
}