aui_mdi button.setdefault win problem (bug) ?

In windows 2k and xp I have a python segfault when I open two aui_mdi
child frames each one with a default button and then close them, the
second one can't destroy the button and python crashes. I've solved the
problem by manually calling button.Destroy() on the default buttons
before closing all child frames.
In ubuntu I don't have the problem, only in win 2k and xp.
Could this be a bug? run the test and open 2 child windows, then close
them.

Thank you

test_auimdi.py (1.98 KB)