Your comments

Ok no probs, I should be on the latest version but I'll double check. 

Hope these make sense - 

So the first one is where the dialog box should be when 'pinned' but it only appears when its hovered over.

The second is when typing are clicked in it etc, but as you can see, the area behind it is obscured.

Sure, can i send you a link and grab the screenshot from there? 

Kind of, when its docked on the side of the screen I'm wanting to be able to keep it on top by pinning it there, but without the client's screen behind being obscured by the dialog box, so have their screen resolution scaled to fit n the gap to the left.. if that makes more sense?