I added a Metaboxes using the User Meta plugin, with a include option:
'include' => array(
'user_role' => array('user_test'),
I need to use multiple roles for each user, so I used this plugin (https://wordpress.org/plugins/multiple-roles/) to enable this "hidden feature".
The problem is that activating this plugin, the Metaboxes is properly displayed when a user user_role match to that included in the "includes" option, but when I save the user page, all the metabox.io fields are not saved.
How could I do to fix it?