WPF RadGridView Alternating Row Background not working

[Dimitar]

I am trying a simple example of a WPF RadGridView and can't get the alternating row background to work here is my code:

<Grid>
       <Grid.ColumnDefinitions>
           <ColumnDefinition Width="312*"/>
           <ColumnDefinition Width="205*"/>
       </Grid.ColumnDefinitions>
       <telerik:RadGridView ItemsSource="{Binding Path=MyItems}" AlternateRowBackground="Black" AlternationCount="2">
       </telerik:RadGridView>
   </Grid>

Can someone tell me what I am missing?
Attached is a screenshot with what the output of this looks like. 

[Yoan]

Hi Dimitar,

I've tried to reproduce the problem you report, but to no avail. You can check the attached project  which illustrates my attempt. Please note that, I am using our latest official version - 2014.2.0729. May I ask you to test with our latest version? Do you have some custom styles applied to RadGridView?

It will be great if you can modify the sample project in order to reproduce the issue and resend it back to me for further investigation.

Regards,
Yoan
Telerik