Accordion element is not in the correct visual state

I need to use Accordion to display some totals in a LOB application that we are creating.

If I put the Accordion in XAML everything works fine and the state of the (>) icon is correct and points to right. When we enter the mouse into the AccordionItem, we have no visual state change.

If I dynamically add AccordionItems to the Click button (to simulate an asynchronous data call), the state of the icon does not match, and in the MouseEnter it is "corrected" by performing a visual change in state. * You may need to double click on "Add 3 Accordion Elements".

If I dynamically add an Accordion to a button click with AccordionItems, it works great. Below is a sample application.

So what do I need to do to get Accordion to add AcordionItems at runtime and be in the correct state when using XAML?

XAML

 <Grid x:Name="LayoutRoot" Background="Black" >
  <StackPanel x:Name="TheStackPanel">
     <Button Content="Create Accordion" Click="CreateAccordionItems"></Button>
     <Button Content="Add 3 Accordion Items" Click="AddAccordionItems"></Button>
     <Grid Background="Pink">
        <layoutToolkit:Accordion SelectionMode="ZeroOrMore" x:Name="TestAccordion" Margin="10,10,10,10" HorizontalAlignment="Stretch"  >
           <layoutToolkit:AccordionItem Content="Content - 1" Header="Header - 1">
           </layoutToolkit:AccordionItem>
           <layoutToolkit:AccordionItem Content="Content - 2" Header="Header - 2">
           </layoutToolkit:AccordionItem>
           <layoutToolkit:AccordionItem Content="Content - 3" Header="Header - 3">
           </layoutToolkit:AccordionItem>
        </layoutToolkit:Accordion>
     </Grid>
  </StackPanel>

      

        
        
        
      

    

 public partial class MainPage : UserControl

      

        
        
        
      

    

{private int count = 0; public MainPage () {// Required to initialize variables InitializeComponent (); //TestAccordion.ExpandDirection = ExpandDirection.Down; }

  private void AddAccordionItems( object sender, RoutedEventArgs e )
  {
     AddToAccordion( 3, TestAccordion );
  }

  private void AddToAccordion( int size, Accordion _Accordion )
  {
     for( int i = 0; i < size; i++ )
     {
        AccordionItem accordionItem = new AccordionItem( );
        accordionItem.Header = "Item " + count.ToString( );
        count++;
        _Accordion.Items.Add( accordionItem );
        Grid aGrid = new Grid( );
        TextBlock tb = new TextBlock( );
        tb.Text = accordionItem.Header as string;
        aGrid.Children.Add( tb );
        accordionItem.Content = aGrid;
        //accordionItem.IsEnabled = true;
        accordionItem.IsSelected = true;
     }
  }

  private void CreateAccordionItems( object sender, RoutedEventArgs e )
  {
     Accordion accordion = new Accordion( );
     accordion.HorizontalContentAlignment = HorizontalAlignment.Stretch;
     TheStackPanel.Children.Add( accordion );
     AddToAccordion( 10, accordion );
  }

      

        
        
        
      

    

}