We're currently using Standard MDI and are forcing our DocumentWindows to be Maximized. The XAML for the StandardMdiHost follows along with the code that is invoked whenever we activate a new DocumentWindow. In 4.5.487, our DocumentWindows had just a Close button. In 9.1.503, I'm seeing both a Restore button and a Close button. What do I need to do to get rid of the Restore button - we're trying to force the DocumentWindow to stay maximized.
<!--Document Workspace-->
<docking:Workspace Name="workSpace" AutomationProperties.AutomationId="workSpace">
<docking:StandardMdiHost Name="standardMdiHost" WindowsHaveMinimizeButtons="False" AutomationProperties.AutomationId="standardMdiHost"
SelectionChanged="internalWindowHost_SelectionChanged">
<docking:StandardMdiHost.Resources>
<Style TargetType="docking:WindowControl">
<Setter Property="HasRestoreButton" Value="False"/>
<Setter Property="HasMaximizeButton" Value="False"/>
<Setter Property="ResizeMode" Value="NoResize"/>
<Setter Property="HasDropShadow" Value="False"/>
</Style>
</docking:StandardMdiHost.Resources>
</docking:StandardMdiHost>
</docking:Workspace>
// Activate the window.
internalWindow.Activate(true);
StandardMdiHost.SetStandardMdiWindowState(internalWindow, WindowState.Maximized);
