Hi,

 We are using the RadCombobox inside the RadGridview Control in our application. We have created the RadComboBox as typeahead.
 we have set the below properties to combo box. 

 <telerik:RadComboBox Name="cmbDetails" IsEditable="True" SelectedValue="{Binding BookNo,Mode=TwoWay}"  IsReadOnly="True" IsFilteringEnabled="True" TextSearchMode="Contains"
                                                 Loaded="cmbDetails_Loaded" KeyDown="cmbDetails_KeyDown" KeyUp="cmbDetails_KeyUp">
                            </telerik:RadComboBox>

But the RadComboBox is not open properly if select the items in the combo box using keyboard.
1. We are using the product version is (2010.3.1110.1040). ( Refer Screen Shot 1 )
2. we have added the dll to our project ( Refer Screen shot 2 )

FYI  i have attached the output of the  screen shot (Refer Screen Shot 3 & 4 )

can you please explain  How to solve this issue ?

Thanks in Advance.

Hi Stew,

We fixed similar problem in the past (I wasn't able to quickly find the specific version, though) and I believe that if you upgrade to the latest available version of RadControls under your account the problem will disappear. If it persists, please, send us a simple project that can be used to observe the problem and we will do our best to provide a fix with one of the upcoming internal builds or SP releases (you might need to upgrade, though).

Kind regards,
Valeri Hristov
the Telerik team