I have created a subclass of the RibbonTabItem to simplify my main window's ribbon. The problem is that the designer for my RibbonTabItem subclass only shows the "tab" part of the ribbon tab item! All of the children are not shown in the designer. This really cuts my productivity down.

How can I get the designer to show up properly? I know that I could move this to the window, but that prevents me from creating reusable ribbon tabs

Below is an example:

<igRibbon:RibbonTabItem x:Class="Intel.DE.DSS.HomeRibbonTab"

             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

             xmlns:igRibbon="http://infragistics.com/Ribbon"

             Header="Home"

             mc:Ignorable="d" d:DesignHeight="72" d:DesignWidth="245">

    <igRibbon:RibbonGroup Caption="Test Group">

        <igRibbon:ButtonTool Caption="Test Button" />

    </igRibbon:RibbonGroup>

</igRibbon:RibbonTabItem>