WPF weird window behaviour

Nishant, I think you've better undertood my problem. But for more clarity I shall explain again.

Let's say I have 3 applications open, the topmost is Internet Explorer, second is my application, and thirdly is an Explorer window. So I wish to view my application by minimizing the IE window. For some reason this drops my application behind the Explorer window that was at the back to start with. I haven't even interacted with my application, but it's affected?

I agree that the icon issue is most likely something different. Now my application uses WindowStyle - SingleBorderWindow and implements a Glass Effect:

public static bool ExtendGlassFrame(Window window, Thickness margin)
{
if (IsGlassEnabled())
{

if (!DwmIsCompositionEnabled())
return false;
IntPtr hwnd = new WindowInteropHelper(window).Handle;
if (hwnd == IntPtr.Zero)
throw new InvalidOperationException("The Window must be shown before extending glass.");
// Set the background to transparent from both the WPF and Win32 perspectives
window.Background = Brushes.Transparent;
HwndSource.FromHwnd(hwnd).CompositionTarget.BackgroundColor = Colors.Transparent;
MARGINS margins = new MARGINS(margin);
DwmExtendFrameIntoClientArea(hwnd, ref margins);
return true;
}
else
return false;
}