RadRibbonWindow Effect DropShadowEffect & Shell prism

[Mathieu]

Hello Telerik Team,

 

I am currently using your telerik Q2 WPF with VisualStudio2013 theme.

I want to add a DropShadowEffect to my main Window.

The Shell is based on RadRibbonWindow as a main Window.

I want to apply a DropShadowEffect on the RadRubbonWindow, but it is like the effect is ignored at all.

<telerik:RadRibbonWindow
 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
 xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
 ....
 >
 <telerik:RadRibbonWindow.Effect>
     <DropShadowEffect Direction="-190" BlurRadius="15" Opacity="0.4" Color="Red"/>
 </telerik:RadRibbonWindow.Effect>

 

I have the red border on Blend and Visual studio, but when the application is running nothing is present.

How can I solve this?