'MarkFirstMatchis not working when enable 'checkbox' property

[Naren]

I have a Radcombox with MarkFirstMatch and working fine until i enabled 'Checkbox' property also.
Please help me to sort out this issue since i need both features simultaneously

My code snippet is given below:
  <telerik:RadComboBox runat="server" ID="cboDrug" Width="300px" EmptyMessage="--select--" Height="200px"
                                                        MarkFirstMatch="true" CssClass="teldrpbox" EnableLoadOnDemand="True" ShowMoreResultsBox="true" ExpandDirection="Up" CheckBoxes="true"  AllowCustomText="true"
                                                        DropDownWidth="350px"> </telerik:RadComboBox>

[Princy]

Hello

This is the expected behavior.The reason is that the CheckBox selection is different from the standard RadComboBox's selection - there is no single selected item.
For more information check the following help documentation CheckBox Support

Thanks
Princy