在查找某个post_type时，get_posts（）不会返回帖子

I currently have the same args to look for a certain post:

$page = 0;

$args = array(
    "posts_per_page" => 10,
    "offset" => $page * 10,
    "post_type" => "graven",
    "post_status" => "publish"
);

$posts = get_posts($args);
var_dump($posts);

This properly returns the 10 first posts of this type, ordered by date. Now, there's another custom post type (made using the Pods framework, pods.io), which has a different name, other than that, should be quite the same. The only difference I should be using in my queries is changing the post_type to begraafplaats and set the post_status to draft, however, this results in an empty array to be returned. I know the ID of one of these posts, so using get_post(<the id>) I queried the post, and got the result as I expected.

This gives me the following output:

WP_Post Object
(
    [ID] => 3935
    [post_author] => 1
    [post_date] => 2015-08-21 04:25:16
    [post_date_gmt] => 0000-00-00 00:00:00
    [post_content] => 
    [post_title] => R.K. Begraafplaats St. Theresiakerk (Eindhoven)
    [post_excerpt] => 
    [post_status] => draft
    [comment_status] => closed
    [ping_status] => closed
    [post_password] => 
    [post_name] => 
    [to_ping] => 
    [pinged] => 
    [post_modified] => 2015-08-21 04:25:16
    [post_modified_gmt] => 2015-08-21 04:25:16
    [post_content_filtered] => 
    [post_parent] => 0
    [guid] => http://example.com/?post_type=begraafplaats&p=3935
    [menu_order] => 0
    [post_type] => begraafplaats
    [post_mime_type] => 
    [comment_count] => 0
    [filter] => raw
)

As you can see, the post_type returned is the same I used in my $args array, and the post type is draft, as expected. Yet, it doesn't seem to get me any results.

Would there be a reasonable explanation of why this wouldn't work?

I have managed to resolve the issue using bare MySQL queries using $wpdb. It's not an elegant solution, however, I do have all the info I need now.

You can get all the post of particular post type as below

$post_type='home_block';
              $arg=array(
                'post_type'=>$post_type,
                'post_status'=>'publish',
                'post_per_page'=>'4',
                'caller_get_posts'=>'1'
                );
              $my_query=null;
              $my_query= new WP_Query($arg);
              if($my_query->have_posts()):
                while($my_query->have_posts()):
                    $my_query->the_post();?>
                     <div class="service-list-box">
                            <div class="service-image">
                               <?php the_post_thumbnail();?>
                            </div>
                            <div class="service-list">
                             <?php the_content();?>                            

                                <?php the_title();?>
                            </div>
                        </div>                   

                   <?php  endwhile;
                endif; ?>