In the SwingSet2 demo, when one docks the toolbar to the left or right side of the app, the entire gui, except for the toolbar, dissapears. It turns out that it is being forced downward.

The problem is that the demo adds the toolbar to a panel which is then added to the NORTH of another panel. So, although the toolbar is being layed out correctly with respect to its parent, it is always in the top of the layout.