Try to add the #weight
property to $form['actions']
wrapper.
Your current code changes the weight for the 2 buttons inside the actions wrapper
, and doesn't affect the weight for the wrapper.
E.g. see the following code:
function mymodule_form_alter(&$form, &$form_state, $form_id)
{
//add some $form items here
$form['actions']['#weight'] = 2000;
}
Hope this works.