This doesn't seem like it should be a problem with Infragistics and feels like it should be trivially simple... but I only have this problem when using RibbonWindowContentHost so I thought I'd throw this out there and see if anyone else has run into this or knows what could be going on.

I am adding a StatusBar to a RibbonWindowContentHost.

For some reason, the Border inside the StatusBar is given a padding of 0,0,20,0.  I tried making an app in Blend without using infragistics and I have no such problem.  I've tried various ways to get rid of this padding but I can't seem to do it.

I tried setting the padding on my StatusBar to being 0 in xaml.  I tried setting it in code after adding it to the RibbonWindowContentHost.  I tried creating a control template that had no such padding.  But none of these things worked for me.

I always end up with 20 pixels of unused space on the right hand side.  Is there something strange going on under the covers of how RibbonWindowContentHost uses the StatusBar that would prevent me from getting rid of this padding?

The xaml for my StatusBar looks like this:

 <StatusBar x:Class="Geomagic.Apps.Generic.CommonResources.StatusBarControl"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Padding="0,0,0,0"
    >

    <StatusBarItem x:Name="statusBarItem">
        <Grid Width="{Binding ActualWidth, ElementName=statusBarItem, Mode=Default}">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="*"/>
                <ColumnDefinition Width="Auto"/>
            </Grid.ColumnDefinitions>
            <DockPanel LastChildFill="True" Grid.Column="0">
                <TextBlock x:Name="_StatusText" TextTrimming="CharacterEllipsis" ToolTip="{Binding Text, ElementName=_StatusText, Mode=Default}"/>
            </DockPanel>
            <ProgressBar x:Name="_MainProgressBar" VerticalAlignment="Center" Grid.Column="1" Height="18" HorizontalAlignment="Center" Width="150"/>
            <TextBlock x:Name="_ProgressTime" HorizontalAlignment="Center" Grid.Column="1" VerticalAlignment="Center"/>
        </Grid>
    </StatusBarItem>
</StatusBar>

The visual tree according to snoop is:

StatusBarArea

   StatusBarControl

      StatusBar_BackgroundLayer

      StatusBar_ForegroundLayer

      Border <- this is the guy with padding of 0,0,20,0

        ItemsPresenter

             DockPanel

                   StatusBarItem

                           ...

Any ideas?