GLCanvas in JSplitPane

[Wizumwalt]

I've got a vertical JSplitPane with a JPanel on the top and another JTabbedPane on the bottom.

Top:
I have a GLCanvas (Java OpenGL Bindings) inside a JTabbedPane which is inside the JPanel on the top (above the divider location).

Bottom:
I have a simple JPanel in each of the tabs of the JTabbedPane on the bottom (beneath my divider location).

My problem is that, I can always drag my divider location downward to where it decreases my lower JTabbedPane and increases the hight of the top JPanel (whether I've got the tab opened w/ my GLCanvas or select another tab with just a JPanel showing), but I can never drag it upwards to where it decreases the size of my GLCanvas (or any selected tab w/ a JPanel) and increases the bottom pane.

Anyone have any ideas on this?