Lets talk about the UV image editor?

So I first open the UV editor and the first thing I notice is this sort of scale cage that I can not interact with or actualy use for nothing, it just sit there, blocking the view.

What does it is meant for, why I cant hide it?

My first thought was that it was a Transformation Helper, like we have on so many 2D applications (PS, Gimp).
Problem here is that clicking on the helpers (scale squares or rotation circle) does not work (yet?).
Maybe they are still coding it to work?

I found out that box which shows action does not update if cursor is not moved. So when clicked to minimize it is blank and when you move cursor it repaints and shows title, same thing when maximized.