Must be a browser thing. I've just used Chrome on another PC and it collapses and there is an image to re-open it. I say image, as the image didn't load it was just the default-for-an-image image. In Firefox, there is no image, as my image in post #3 shows.
Right then, this is Chrome's -
And this is IE's -
Confusing? Yes. Why is no image showing, and yet re-opening when clicked, apart from FF?