ScheduleView Green theme blank content

[Esh]

The header of the SW is visible but there nothing in the content area, bank white not even the no appointments text.

Attaching sample project and image

App.xaml:

 <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="/Themes/System.Windows.xaml"/>
                <ResourceDictionary Source="/Themes/Telerik.Windows.Controls.xaml"/>
                <ResourceDictionary Source="/Themes/Telerik.Windows.Controls.Input.xaml"/>
                <ResourceDictionary Source="/Themes/Telerik.Windows.Controls.Navigation.xaml"/>
                <ResourceDictionary Source="/Themes/Telerik.Windows.Controls.ScheduleView.xaml"/>
            </ResourceDictionary.MergedDictionaries>

        </ResourceDictionary>

 

UC:

        xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" >
    <Grid>

        <telerik:RadScheduleView  >
            <telerik:RadScheduleView.ViewDefinitions>
                <telerik:DayViewDefinition DayStartTime="8:00" />
                <telerik:WeekViewDefinition DayStartTime="8:00" />
                <telerik:MonthViewDefinition />
                <telerik:TimelineViewDefinition />
                <telerik:AgendaViewDefinition />
            </telerik:RadScheduleView.ViewDefinitions>
        </telerik:RadScheduleView>
    </Grid>

Is there anything I am doing wrong?

Thank you.

[Esh]

Soved:

Targeting the WPF Core and was using the theme for .net classic. solution: replacing the theme resources with  Themes.Implicit\NetCore