TabLayoutPanel inside HeaderPanel - tab body doesn't show

I'm updating a module originally done in GWT 1.7 to GWT 2.4, and I'm
having a problem with a TabLayoutPanel inside a HeaderPanel. When I
add the TabLayoutPanel to the content area of the HeaderPanel, the tab
content does not appear. Inspecting the HTML shows that the tab
content divs have 0 height.

I think this is a bug, and that's a serious bummer. HeaderPanel sounds
like exactly what we need to replace the Rube Goldberg resize listener
stuff we had to do in a composite using the old widgets.
DockLayoutPanel appears to work OK with TabPanel, but isn't suitable
for this application because we have some resizable elements in the
header area. HeaderPanel handles those just fine...but the main
content of the page doesn't display due to this apparent problem with
TabLayoutPanel.

Am I missing something?

JLS

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