Navigation Pane Title Missing Office 2010 Themes

<ribbon:RibbonWindow 
    x:Class="RibbonTest"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:ribbon="http://schemas.actiprosoftware.com/winfx/xaml/ribbon" 
    xmlns:navigation="clr-namespace:ActiproSoftware.Windows.Controls.Navigation;assembly=ActiproSoftware.Navigation.Wpf351" 
    xmlns:themes="http://schemas.actiprosoftware.com/winfx/xaml/themes"
    ApplicationName="RibbonTest" 
    Width="620" 
    Height="420"
    themes:ThemeManager.Theme="Office2010Blue"
    >

    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto" />
            <RowDefinition Height="*" />
        </Grid.RowDefinitions>
            
        <!-- Ribbon Control (Define last so that adorners overlay other controls) -->
        <ribbon:Ribbon x:Name="ribbon" Grid.Row="0">
            
            <!-- Tab Panel Items (Appear next to the tabs) -->
            <ribbon:Ribbon.TabPanelItems>
                <ribbon:Button Label="Help" KeyTipAccessText="Z" />
            </ribbon:Ribbon.TabPanelItems>
    
            <ribbon:Ribbon.ApplicationMenu>
                <!-- Application Menu -->
                <ribbon:ApplicationMenu>
                
                    <!-- Application Menu Items -->
                    <ribbon:Button Label="New" KeyTipAccessText="N" />
                    <ribbon:Button Label="Open" KeyTipAccessText="O" />
                    <ribbon:Button Label="Save" KeyTipAccessText="S" />
                    <ribbon:Button Label="Save As" KeyTipAccessText="A" />
                    <ribbon:Separator />
                    <ribbon:Button Label="Print" KeyTipAccessText="P" />
                    <ribbon:Separator />
                    <ribbon:Button Label="Close" KeyTipAccessText="C" />

                    <!-- Additional Content (Right side of application menu) -->
                    <ribbon:ApplicationMenu.AdditionalContent>
                        <ribbon:RecentDocumentMenu>
                        </ribbon:RecentDocumentMenu>
                    </ribbon:ApplicationMenu.AdditionalContent>
                    
                    <!-- Application Menu Footer Buttons -->
                    <ribbon:ApplicationMenu.FooterButtons>
                        <ribbon:Button Label="Options" KeyTipAccessText="I" />
                        <ribbon:Button Label="Exit Application"  KeyTipAccessText="X" />
                    </ribbon:ApplicationMenu.FooterButtons>
                </ribbon:ApplicationMenu>
            </ribbon:Ribbon.ApplicationMenu>
            
            <!-- Quick Access ToolBar (QAT) -->
            <ribbon:Ribbon.QuickAccessToolBarItems>
            </ribbon:Ribbon.QuickAccessToolBarItems>
                        
            <!-- Tabs -->
            <ribbon:Ribbon.Tabs>
            
                <ribbon:Tab Label="Home" KeyTipAccessText="H">
                    <ribbon:Group Label="New Group">
                        
                        
                    </ribbon:Group>
                </ribbon:Tab>
                
                <ribbon:Tab Label="Another Tab" />
            </ribbon:Ribbon.Tabs>
            
        </ribbon:Ribbon>

        <Grid SnapsToDevicePixels="True" Grid.Row="1" Margin="6">
            <Grid.ColumnDefinitions>
                <ColumnDefinition 
                        MinWidth="40" 
                        />
                <ColumnDefinition Width="Auto" />
                <ColumnDefinition Width="*" />
            </Grid.ColumnDefinitions>
            
            <navigation:NavigationBar 
                    x:Name="uxNavBar_NavBar"
                    >
                <navigation:NavigationPane
                        x:Name="Jobs"
                        Title="Title Goes Here"
                        Content="One Two Three"
                        Padding="3"
                        />

            </navigation:NavigationBar>
        </Grid>
    </Grid>
</ribbon:RibbonWindow>