I would have to say it is fixable. I have tried changing more Windows Styles, Extended Windows Styles and Window Class Styles to match the other controls. No luck yet but keep encouraging me and I'll get it.
The reason it's fixable is because the MFC controls aren't having a problem. So I need to modify the OLE Control Wrapper or the Windows Messaging handler of the OLE wrapper. I also have a sticky mouse problem that is being caused by the TReflector window that Delphi creates to draw the grabber handles in VFP. You click on the control and then move it and the mouse up doesn't release the control. However, it works fine in VB.
I'll test in the 7 BETA to see what happens as well.
Thanks!