DefaultSharePanel

The top-right panel: who is here.

The people menu is the whole of it, and that renders nothing when nobody else is here — but the plate around it did not, so a single-player editor had a 10px rounded blob in its top-right corner: a border, a background and eight pixels of padding around no content at all. Nobody could say what it was, which is the point. The plate now goes when its contents do.