For example when setting the following code in App.xaml resources
<Style TargetType="telerikInput:RadComboBox">
<Setter Property="DropDownBorderColor" Value="Red"/>
<Setter Property="VerticalOptions" Value="Center"/>
<Setter Property="SearchMode" Value="Contains"/>
<Setter Property="Placeholder" Value="rwfrfre"/>
<Setter Property="PlaceholderColor" Value="Yellow"/>
<Setter Property="DisplayMemberPath" Value="Population"/>
<Setter Property="SearchTextPath" Value="Name"/>
</Style>
null ref exception is thrown for DisplayMemberPath and SearchTextPath.
When setting the style inside the page where the control is defined, it works as expected.