[W2k, wxPython 2.6.1.0] - MDISashDemo bug?

[w.p.]

When i run MDISashDemo and maximize main frame, minimize and maximize 
again - LayoutMDIFrame in OnSize dont work more...
Why?

I need this feature for main MDI frame with toolbar and statusbar with 
panels&sizers&bitmapbuttons :)

Windows 2000, wxPython 2.6.1.0

w.p.

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