Undefined property: stdClass::$is_draft w webform_client_form()

Drupal 7.38
Webform 7.x-4.9
PHP 5.4.41

After make node webform and enable generate a checkout pane in advanced seetings when I go to page /cart/checkout I get blank (white) page.

In logs I see:
Notice: Undefined property: stdClass::$is_draft w webform_client_form() (line 2509 in /sites/all/modules/webform/webform.module).
Notice: Undefined property: stdClass::$is_draft w webform_client_form() (line 2415 in /sites/all/modules/webform/webform.module).

When I use Webform 7.x-3.24 then everything is ok.