Bug on re-ordering page that causes only one post to show

For some reason, one of our post types would only show one post on the ordering page.

I found that changing the args array on line 204 in include/cpto-class.php to this fixed it:

$args = array(
                                'sort_column'       =>  'menu_order',
                                'post_type'         =>  $post_type,
                                'posts_per_page'    => -1,
                                'post_status'       =>  'any',
                                'orderby'            => 'menu_order',
                                'order'             => 'ASC',
                    );

The orderby array was breaking it. Might be a bug in WordPress, but didn’t have time to track it all the way down.

https://wordpress.org/plugins/post-types-order/