When I'm coding in XAML view and after I set the IsSelected property to true, it automatically switches to Design view and hangs Visual Studio 2012.

I tested several times and got the same problem. However, setting it to false doesn't cause anything (like it should). XAML view is responsive and doesn't switch to Design view.

This is the code snippet I used to reproduce the problem:

<Intersoft:UXNavigationPaneItem Header="Overview" NavigateUri="/Overview/Home" NavigationState="/Overview" IsDefaultNavigationSource="True" Icon="/Assets/Images/Home.png" IsSelected="False">
	<Intersoft:UXItemsControl ItemContainerStyle="{StaticResource LargeNavigationButtonStyle}">
		<Intersoft:UXNavigationButton Content="Home" NavigateUri="/Overview/Home" Icon="/Assets/Images/Home.png" IsDefaultNavigationSource="True"/>
		<Intersoft:UXNavigationButton Content="About" NavigateUri="/Overview/About" Icon="/Assets/Images/ClientUI_Silverlight.png"/>
	</Intersoft:UXItemsControl>
</Intersoft:UXNavigationPaneItem>

As you can see the IsSelected property is set to False, but when changed to True it causes the problem.