MDI Child form icons disappearing

Hi Folks,

A bug I worked against many years has returned to me... I have a MDI
application where, from time to time, when the MDI child form is maximized
it will "loose" its maximize/restore/minimize/system icons.  When this
happens, the menu is drawn incorrectly as well.

I know that all the appropriate properties of the forms are not being
altered, but that is about it.  I've also noticed this happens only on
Win9X, not on NT.

Has anyone else experienced this and have a clue where to start looking for

TIA and happy holidays!

Greg Postlewait