telrik grid scroll bar not appearing

<Grid Grid.Row="0" Height="*" Width="Auto">
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="Auto" />
                            <ColumnDefinition Width="*" />
                        </Grid.ColumnDefinitions>
                        <Grid.RowDefinitions>
                            
                            <RowDefinition Height="Auto" />
                            
                            <RowDefinition Height="Auto" />
                            
                            <RowDefinition Height="Auto" />
                            <RowDefinition Height="Auto" />
                            <RowDefinition Height="Auto" />
                            <RowDefinition Height="Auto" />
                            <RowDefinition Height="Auto" />
                            
                            <RowDefinition Height="Auto" />
                        </Grid.RowDefinitions>
                        
                        <GroupBox Grid.ColumnSpan="2" Grid.Row="0" Header="Get Documents by..." Name="grpbxGetDocumentsBy" Style="{StaticResource SPClientUtilityStyleGroupBox}" >
                            <Grid Height="Auto" Width="Auto">
                                <Grid.RowDefinitions>
                                    <RowDefinition Height="Auto" />
                                    
                                    <RowDefinition Height="Auto" />
                                </Grid.RowDefinitions>
                            <Grid Grid.Row="0" Height="Auto" Width="Auto">
                                    <Grid.ColumnDefinitions>
                                        
                                        <ColumnDefinition Width="*" />
                                        
                                        <ColumnDefinition Width="*" />
                                        
                                        <ColumnDefinition Width="*" />
                                        <ColumnDefinition Width="*" />
                                        
                                        <ColumnDefinition Width="*" />
                                        <ColumnDefinition Width="*" />
                                    </Grid.ColumnDefinitions>
                                    <RadioButton x:Name="rbtnMasterOBID" Content="Master _OBID" Grid.Column="0" GroupName="grpSearchType" Style="{StaticResource SPClientUtilityStyleRadioButton}" IsChecked="{Binding MasterOBID}" />
                                    <RadioButton x:Name="rbtnUID" Content="_UID" Grid.Column="1" GroupName="grpSearchType" Style="{StaticResource SPClientUtilityStyleRadioButton}" IsChecked="{Binding UID}" />

                                    <RadioButton x:Name="rbtnName" Content="_Name" Grid.Column="2" GroupName="grpSearchType" Style="{StaticResource SPClientUtilityStyleRadioButton}" IsChecked="{Binding Name}" />
                                    
                                    <RadioButton x:Name="rbtnSignature" Content="_Signature" Grid.Column="3" GroupName="grpSearchType" Style="{StaticResource SPClientUtilityStyleRadioButton}" IsChecked="{Binding Signature}" />
                                    <RadioButton x:Name="rbtnRetrievedDocuments" Content="_Retrieved Documents" Grid.Column="4" GroupName="grpSearchType" Style="{StaticResource SPClientUtilityStyleRadioButton}" IsChecked="{Binding RetrievedDocuments}" />
                                    

                                    <RadioButton x:Name="rbtnRetrievable" Content="_Retrievable" Grid.Column="5" GroupName="grpSearchType" Style="{StaticResource SPClientUtilityStyleRadioButton}" IsChecked="{Binding Retrievable}" />
                                </Grid>
                                
                                <TextBox Grid.Row="1" Margin="{StaticResource SPClientUtilityMarginEven}" Name="txtStringToApplyToSearch" Style="{StaticResource SPClientUtilityStyleTextBox}" Text="{Binding StringToApplyToSearch}" Width="Auto" />
                            </Grid>
                        </GroupBox>
                        
                        <Label Content="_Document Class" Grid.Column="0" Grid.Row="1" Style="{StaticResource SPClientUtilityStyleLabel}" />
                        <ComboBox Grid.Column="1" Grid.Row="1" Name="cmbDocumentClass" IsEditable="False" ItemsSource="{Binding Path=DocumentClass}" SelectedItem="{Binding Path=DocumentClassSelected, Mode=TwoWay}" Style="{StaticResource SPClientUtilityStyleComboBox}" />
                        <StackPanel Grid.ColumnSpan="2" Grid.Row="2" Height="Auto" HorizontalAlignment="Center" Orientation="Horizontal" VerticalAlignment="Center">
                            

                            <Button Content="_Find Documents" Name="btnFindDocuments" Style="{StaticResource SPClientUtilityStyleButtonWidthAutoNormal}"  Command="{Binding Path=CommandExecuteDocumentSearch}"/>
                        </StackPanel>
                        
                        <!--working telerik TODO-->
                        <telerik:RadGridView
                            AutoGenerateColumns="False"
                            CanUserDeleteRows="False"
                            CanUserInsertRows="False"
                            CanUserReorderColumns="False"
                            CanUserSortGroups="False"
                            CanUserSelect="True"
                            ColumnWidth="Auto"
                            Grid.ColumnSpan="2" Grid.Row="3" Height="*"
                            GroupRenderMode="Flat"
                            HorizontalAlignment="Center" 
                            HorizontalContentAlignment="Stretch" 
                            IsReadOnly="True"
                            ItemsSource="{Binding DocumentsToPublish}"
                            Margin="{StaticResource SPClientUtilityMarginEven}" 
                            x:Name="rgrdvDocumentsToPublish"
                            RowIndicatorVisibility="Collapsed"
                            ScrollViewer.HorizontalScrollBarVisibility="Auto" ScrollViewer.VerticalScrollBarVisibility="Auto"
                            SelectionMode="Single"
                            SelectionUnit="FullRow"
                            ShowGroupPanel="False"
                            SelectionChanged="Grid_SelectedRoW"
                          
                            >
                            <telerik:RadGridView.Columns>
                                
                                <telerik:GridViewDataColumn Header="#" DataMemberBinding="{Binding DocumentNumber}" />
                                <telerik:GridViewDataColumn Header="Name" DataMemberBinding="{Binding DocumentName}" />
                                <telerik:GridViewDataColumn Header="Type" DataMemberBinding="{Binding DocumentType}" />
                                
                                <telerik:GridViewDataColumn Header="Revision" DataMemberBinding="{Binding DocumentRevision}" />
                                <telerik:GridViewDataColumn Header="Version" DataMemberBinding="{Binding DocumentVersion}" />
                                
                                <telerik:GridViewDataColumn Header="Load Status" DataMemberBinding="{Binding DocumentLoadStatus}" />
                                

                                <telerik:GridViewDataColumn Header="Consolidate Status" DataMemberBinding="{Binding DocumentConsolidateStatus}" />
                                
                                <telerik:GridViewDataColumn Header="Workflow" DataMemberBinding="{Binding SetWorkflowUsedInPublish}" />
                            </telerik:RadGridView.Columns>
                        </telerik:RadGridView>
                        <GroupBox Grid.ColumnSpan="2" Grid.Row="4" Header="Retrieval Options" Name="grpbxRetrievalOptions" Style="{StaticResource SPClientUtilityStyleGroupBox}" >
                            <Grid Height="Auto" Width="Auto">
                                <Grid.RowDefinitions>
                                    
                                    <RowDefinition Height="Auto" />
                                    
                                    <RowDefinition Height="Auto" />
                                </Grid.RowDefinitions>
                                <Grid Grid.Row="0" Height="Auto" Width="Auto">
                                    <Grid.ColumnDefinitions>
                                        
                                        <ColumnDefinition Width="*" />
                                        
                                        <ColumnDefinition Width="*" />
                                        <ColumnDefinition Width="*" />
                                    </Grid.ColumnDefinitions>
                                    
                                    <RadioButton x:Name="rbtnRaw" Content="_Raw" Grid.Column="0" GroupName="grpbxRetrievalOptions" Style="{StaticResource SPClientUtilityStyleRadioButton}" />
                                    
                                    <RadioButton x:Name="rbtnWithInstructions" Content="_With Instructions" Grid.Column="1" GroupName="grpbxRetrievalOptions" Style="{StaticResource SPClientUtilityStyleRadioButton}" />
                                    
                                    <RadioButton x:Name="rbtnLatestFromSPFWithInstructions" Content="_Latest from SPF with Instructions" Grid.Column="2" GroupName="grpbxRetrievalOptions" Style="{StaticResource SPClientUtilityStyleRadioButton}" />
                                </Grid>
                                <CheckBox Content="_Retrieve View File" Grid.Row="2" HorizontalAlignment="Center" Name="chkRetrieveViewFile" Style="{StaticResource SPClientUtilityStyleCheckBox}" />
                            </Grid>
                        </GroupBox>
                        
                        <StackPanel Grid.ColumnSpan="2" Grid.Row="5" Height="Auto" HorizontalAlignment="Center" Orientation="Horizontal" VerticalAlignment="Center">

                            <Button Content="_Retrieve Document" Name="btnRetrieveDocument" Style="{StaticResource SPClientUtilityStyleButtonWidthAutoHero}"  Command="{Binding Path=CommandExecuteDocumentRetrieve}"/>
                        </StackPanel>

                        <Label Content="Retrieval Folder" Grid.Column="0" Grid.Row="6" Style="{StaticResource SPClientUtilityStyleLabel}" />
                        <TextBox Grid.Column="1" Grid.Row="6" Name="txtRetrievalFolder" Style="{StaticResource SPClientUtilityStyleTextBoxDisabled}" Text="{Binding RetrievalFolder}" />
                        
                        <GroupBox Grid.ColumnSpan="2" Grid.Row="7" Header="View" Name="grpbxView" Style="{StaticResource SPClientUtilityStyleGroupBox}" >
                            <Grid Height="Auto" Width="Auto">
                                <Grid.ColumnDefinitions>
                                    <ColumnDefinition Width="*" />
                                    <ColumnDefinition Width="*" />
                                    <ColumnDefinition Width="*" />
                                </Grid.ColumnDefinitions>
                                <Button Content="_Metadata..." Grid.Column="0" Name="btnViewMetadata" Style="{StaticResource SPCLButtonBasicStyle}" />
                                <Button Content="_Data..." Grid.Column="1" Name="btnViewData" Style="{StaticResource SPCLButtonBasicStyle}" />
                                <Button Content="_Instructions..." Grid.Column="2" Name="btnViewInstructions" Style="{StaticResource SPCLButtonBasicStyle}" />
                            </Grid>
                        </GroupBox>
                    </Grid>
                    <!-- -->