Print button in preview of planned post.

Hello,
In the blogs the print button has been activated. It does not work in the preview of a planned post, though.
So when editing through the fronted, and then clicking the preview button in the sidebar, there is a print button, but it only yields a blank page (see screenprint).
Is it possible at all to get this button working? It works fine at the frontend in published blogs.
Thanks!
Ineke