Notebook tab orientation problems

I have been encountering some strange behavior w/ the Notebook control..
when it is contained by a splitter or sizer (and perhaps other containers)
its tab orientation cannot be NB_TOP... even if it is set to NB_TOP
explicitly.

Does anyone have any work-arounds to get NB_TOP to work?

Attached is wxPython 2.4.1.2 code that shows this problem.

Thanks,
Sean

IMSTP.gif

ExampleTabsProblem.py (4.4 KB)