RibbonView - Backstage - Item - Icon

[Mark]

Hi guys,

like the title already tells i use a RibbonView with a Backstage as menu.

There i add a item and set the icon property to a 16x16 png.
The problem is that the icon does not be displayed in the right way, something cuts my image.

And as far as I know the MaxWidth and MaxHeight is set to 16 for these icons. So why my 16x16 image is not displayed right?

Here is the code of my item:

<telerik:RadRibbonBackstageItem Command="{Binding CloseCommand}"
                      Header="Close"
                      Icon="/MyApp.Client.Infrastructure;component/Resources/Images/16/close.png"
                      IsSelectable="False" />

Please find attach a picture showing the result and the orignial image.

Can anybody help me?