Thank you for your post.
Our Development and Software Quality Assurance (Testing) departments are very well familiar with this issue. I see that you reported this issue via the ETS program twice (September, 2008 and September 2009), and I apologize if no one acknowledged you or the problem. In essence, this is a design limitation where the size of the drawing area has become too large to handle and hence, will not display.
Thank you for the reply