WPF Panel problems- SharpDevelop 5.01(RC)

I understand that a ribbon tab can contain a Ribbon Group. When I try this with the designer the following code is produced, but the group does not appear on the screen when I run the program(althought the tab does).

Also How does one access theApplication menu on ribbon- one appears and functions but there is no code to add menu items, nor can it be deleted.

This has also been reported as a bug.

....(preceding code)..

<RibbonTab
                Width="120"
                Height="23"
                Grid.Column="0"
                Grid.Row="0"
                HorizontalAlignment="Left"
                VerticalAlignment="Bottom"
                Margin="142,0,0,203"
                Background="#FF7FFFD4"
                Header="MyTab"
                RenderTransformOrigin="0.275,3.5">
                <RibbonGroup
                    Width="186"
                    Grid.Column="0"
                    Grid.Row="0"
                    Margin="38,0,0,111"
                    Background="#FF7FFFD4"
                    Header="ClipBoard"
                    Height="71"
                    BorderBrush="#FF7FFFD4"
                    VerticalAlignment="Bottom"
                    VerticalContentAlignment="Bottom"
                    HorizontalAlignment="Left"
                    HorizontalContentAlignment="Left" />
            </RibbonTab>