I just tried doing it again with a fresh, vanilla WP installation.
I registered a CPT:
add_action( 'init', 'register_cpt_test' );
function register_cpt_test() {
$labels = array(
'name' => _x( 'Tests', 'test' ),
'singular_name' => _x( 'Test', 'test' ),
'add_new' => _x( 'Add New', 'test' ),
'add_new_item' => _x( 'Add New Test', 'test' ),
'edit_item' => _x( 'Edit Test', 'test' ),
'new_item' => _x( 'New Test', 'test' ),
'view_item' => _x( 'View Test', 'test' ),
'search_items' => _x( 'Search Tests', 'test' ),
'not_found' => _x( 'No tests found', 'test' ),
'not_found_in_trash' => _x( 'No tests found in Trash', 'test' ),
'parent_item_colon' => _x( 'Parent Test:', 'test' ),
'menu_name' => _x( 'Tests', 'test' ),
);
$args = array(
'labels' => $labels,
'hierarchical' => true,
'supports' => array( 'title', 'editor' ),
'taxonomies' => array( 'category' ),
'public' => true,
'show_ui' => true,
'show_in_menu' => true,
'show_in_nav_menus' => true,
'publicly_queryable' => true,
'exclude_from_search' => false,
'has_archive' => true,
'query_var' => true,
'can_export' => true,
'rewrite' => true,
'capability_type' => 'post'
);
register_post_type( 'test', $args );
}
Then I went to Edit Flow > Editorial Comments and Notifications and checked the box Tests.
I went to the Add New Test screen and I see the Editorial Comments and Notfications metaboxes but there are no custom statuses. Only Draft and Pending Review.
There is no Editorial Metadata metabox either.
In the regular Add New Post screen, I see Editorial Comments, Editorial Metadata, Notifications and the custom statuses.