Bryce, I'm not exactly sure what you mean when you say you can grab it but it's blank in that space.
When I put something at the top of the pasteboard, yes, I guess I can also grab it if I know it's there (because I know I put something there) but as soon as you click off of it, the handles go away so I guess it's kind of invisible. Then you can click on the area where you know you put something and the handles are selected. This is for the top and bottom of the document, which Mark Daniel explained above. However, there is pasteboard on each side of the document where you can place things and they are visible, so that is handy.
Annette