Merging of the Ribbon control located in the ControlPane of the Backstage view does not work in MDI mode

I have created an example.
The program has a RibbonControl on the main form.  I'll call this the "main rc"
The main rc has an application menu which is a BackstageViewControl with one BackStageTabItem "Other".
Other has a RibbonControl, I'll call this "backstage rc".
Other has a document in it with it's own RibbonControl.  I'll call this document rc.
What I want is the document rc to be merged into the backstage rc, and the backstage rc to not merge into the main rc.
What happens is that the document rc is merged into the main rc, and the backstage rc does not merge.
I made the application menu to be translucent so you can see the document rc being merged behind the application menu with the main rc.

Hello Eric,

Thank you for providing the sample project. You can set the RibbonControl.MDIMergeStyle property to Never (as Michael suggested above) to avoid merging the main ribbon control and the ribbon control located in the backstage view. In this case, the ribbon control located in the backstage view will be merged with the ribbon control from a document.

XAML
<dxr:RibbonControl x:Name="ribbonControl1" RibbonStyle="Office2007" DockPanel.Dock="Top" MDIMergeStyle="Never">  
            <dxr:RibbonControl.ApplicationMenu  >  
                <dxr:BackstageViewControl  Opacity="0.7">  

Thanks,
Elliot

Thanks, it works in my example but in my actual project code the document rc won't merge with my backstage rc for some reason.   I'll have to figure that out - I'll post again if I can recreate that in an example.
I do also want the main rc to merge with main documents so I added these backstage open/close events to the main rc and now the example works great!
MainWindow.xaml:
<dxr:RibbonControl x:Name="ribbonControl1" RibbonStyle="Office2007" DockPanel.Dock="Top" BackstageOpened="ribbonControl1_BackstageOpened" BackstageClosed="ribbonControl1_BackstageClosed">
MainWindow.xaml.cs
public partial class MainWindow : DXRibbonWindow
   {
       public MainWindow()
       {
           InitializeComponent();
           DataContext = new DataSource();
       }
       private void ribbonControl1_BackstageOpened(object sender, EventArgs e)
       {
           ribbonControl1.MDIMergeStyle = MDIMergeStyle.Never;
       }
       private void ribbonControl1_BackstageClosed(object sender, EventArgs e)
       {
           ribbonControl1.MDIMergeStyle = MDIMergeStyle.Always;
       }
   }

Hello Eric,

Do not hesitate to contact us again in case you face any difficulties. We are always happy to help you.

Thanks,
Elliot

I have made an example that recreates my problem with BackstageView ApplicationMenu that has a problem merging RibbonControls.  Its the same as the last example, but I added more menu items in the application menu, and then the problem can be seen (and I turned off the main ribbon's merging as discussed previously).
The main ribboncontrol is set to never merge.
The Application Menu (using BackstageViewControl) has multiple BackstageTabItems.  Each of these have a RibbonControl and contain a tabbed documents that I want merged into the BackstageTabItems RibbonControl.
The problem is that, the merging is only successful after I open every tab in the Application Menu.  Before that, the documents RibbonControl cannot be seen (though it does flash momentarily).  But after opening each Application Menu item,  the merging works as expected and keeps working as long as the program runs.

Hello  Eric,

Thank you for providing the test project. I was able to replicate this problem on our side and will forward this ticket to our R&D team. We will notify you of our results shortly.

Thanks,
Elliot