Hi @rpk
It sounds like the issue is coming from the format_value filter. This filter is used to allow each field type (and functions.php) to modify the value based on the field.
This explains why the field value is returned for non WYSIWYG fields.
Can you confirm that you have no format_value filter code in your functions.php file which could be clearing the $value?
Next, try adding 2 false parameters to your code like so:
$test = get_field( 'pro_description', false, false );
Does this allowed the WYSIWYG field to return it’s value?
