Index: class/Managed.Windows.Forms/System.Windows.Forms/InternalWindowManager.cs
===================================================================
--- class/Managed.Windows.Forms/System.Windows.Forms/InternalWindowManager.cs	(revision 105133)
+++ class/Managed.Windows.Forms/System.Windows.Forms/InternalWindowManager.cs	(working copy)
@@ -259,7 +259,7 @@
 
 				form.ActiveMenu.Draw (pe, new Rectangle (pnt.X, pnt.Y, form.ClientSize.Width, 0));
 			}
-			if (HasBorders) {
+			if (HasBorders || IsMinimized) {
 				// clip region is not correct on win32.
 				// use the entire form's area.
 				clip = new Rectangle (0, 0, form.Width, form.Height);