Selected and Current Cells go out of sync

[StackOverflowed]

Here's a very simple sample. Maximize the window, click on a grid and just hold down the "down arrow" key. After a few seconds at most, you will see that current item will keep on being updated as the grid scrolls down, while the selected item just disappears.

<Window x:Class="WPFSpike2.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
        xmlns:Controls="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.GridView" Title="MainWindow" Height="350" Width="525">

    <Window.Resources>

    </Window.Resources>
    <UniformGrid Rows="3"
                 Columns="3">

        <UniformGrid Rows="3"
                     Columns="3">
            <Button Content="TopLeft" />
            <Button Content="Top" />
            <Button Content="TopRight" />
            <Button Content="Left" />

            <telerik:RadGridView ShowGroupPanel="False"
                                 ItemsSource="{Binding Points}"
                                 IsSynchronizedWithCurrentItem="False"
                                 SelectionUnit="Cell"
                                 SelectionMode="Single"
                                 RowHeight="25" />

            <Button Content="Right" />
            <Button Content="BottomLeft" />
            <Button Content="Bottom" />
            <Button Content="BottomRight" />

        </UniformGrid>

        <UniformGrid Rows="3"
                     Columns="3">
            <Button Content="TopLeft" />
            <Button Content="Top" />
            <Button Content="TopRight" />
            <Button Content="Left" />

            <telerik:RadGridView ShowGroupPanel="False"
                                 ItemsSource="{Binding Points}"
                                 IsSynchronizedWithCurrentItem="False"
                                 SelectionUnit="Cell"
                                 SelectionMode="Extended"
                                 RowHeight="25" />

            <Button Content="Right" />
            <Button Content="BottomLeft" />
            <Button Content="Bottom" />
            <Button Content="BottomRight" />

        </UniformGrid>

        <UniformGrid Rows="3"
                     Columns="3">
            <Button Content="TopLeft" />
            <Button Content="Top" />
            <Button Content="TopRight" />
            <Button Content="Left" />

            <telerik:RadGridView ShowGroupPanel="False"
                                 ItemsSource="{Binding Points}"
                                 IsSynchronizedWithCurrentItem="False"
                                 SelectionUnit="Cell"
                                 SelectionMode="Extended"
                                 RowHeight="25" />

            <Button Content="Right" />
            <Button Content="BottomLeft" />
            <Button Content="Bottom" />
            <Button Content="BottomRight" />

        </UniformGrid>

        <UniformGrid Rows="3"
                     Columns="3">
            <Button Content="TopLeft" />
            <Button Content="Top" />
            <Button Content="TopRight" />
            <Button Content="Left" />

            <telerik:RadGridView ShowGroupPanel="False"
                                 ItemsSource="{Binding Points}"
                                 IsSynchronizedWithCurrentItem="False"
                                 SelectionUnit="Cell"
                                 SelectionMode="Extended"
                                 RowHeight="25" />
            <Button Content="Right" />
            <Button Content="BottomLeft" />
            <Button Content="Bottom" />
            <Button Content="BottomRight" />

        </UniformGrid>

        <UniformGrid Rows="3"
                     Columns="3">
            <Button Content="TopLeft" />
            <Button Content="Top" />
            <Button Content="TopRight" />
            <Button Content="Left" />

            <telerik:RadGridView ShowGroupPanel="False"
                                 ItemsSource="{Binding Points}"
                                 IsSynchronizedWithCurrentItem="False"
                                 SelectionUnit="Cell"
                                 SelectionMode="Extended"
                                 RowHeight="25" />

            <Button Content="Right" />
            <Button Content="BottomLeft" />
            <Button Content="Bottom" />
            <Button Content="BottomRight" />

        </UniformGrid>

        <UniformGrid Rows="3"
                     Columns="3">
            <Button Content="TopLeft" />
            <Button Content="Top" />
            <Button Content="TopRight" />
            <Button Content="Left" />
            <telerik:RadGridView ShowGroupPanel="False"
                                 ItemsSource="{Binding Points}"
                                 IsSynchronizedWithCurrentItem="False"
                                 SelectionUnit="Cell"
                                 SelectionMode="Extended"
                                 RowHeight="25" />

            <Button Content="Right" />
            <Button Content="BottomLeft" />
            <Button Content="Bottom" />
            <Button Content="BottomRight" />

        </UniformGrid>

        <UniformGrid Rows="3"
                     Columns="3">
            <Button Content="TopLeft" />
            <Button Content="Top" />
            <Button Content="TopRight" />
            <Button Content="Left" />

            <telerik:RadGridView ShowGroupPanel="False"
                                 ItemsSource="{Binding Points}"
                                 IsSynchronizedWithCurrentItem="False"
                                 SelectionUnit="Cell"
                                 SelectionMode="Extended"
                                 RowHeight="25" />

            <Button Content="Right" />
            <Button Content="BottomLeft" />
            <Button Content="Bottom" />
            <Button Content="BottomRight" />

        </UniformGrid>

        <UniformGrid Rows="3"
                     Columns="3">
            <Button Content="TopLeft" />
            <Button Content="Top" />
            <Button Content="TopRight" />
            <Button Content="Left" />

            <telerik:RadGridView ShowGroupPanel="False"
                                 ItemsSource="{Binding Points}"
                                 IsSynchronizedWithCurrentItem="False"
                                 SelectionUnit="Cell"
                                 SelectionMode="Extended"
                                 RowHeight="25" />

            <Button Content="Right" />
            <Button Content="BottomLeft" />
            <Button Content="Bottom" />
            <Button Content="BottomRight" />

        </UniformGrid>

        <UniformGrid Rows="3"
                     Columns="3">
            <Button Content="TopLeft" />
            <Button Content="Top" />
            <Button Content="TopRight" />
            <Button Content="Left" />

            <telerik:RadGridView ShowGroupPanel="False"
                                 ItemsSource="{Binding Points}"
                                 IsSynchronizedWithCurrentItem="False"
                                 SelectionUnit="Cell"
                                 SelectionMode="Extended"
                                 RowHeight="25" />

            <Button Content="Right" />
            <Button Content="BottomLeft" />
            <Button Content="Bottom" />
            <Button Content="BottomRight" />

        </UniformGrid>

    </UniformGrid>

</Window>

[Yordanka]

Hi StackOverflowed,

Thank you for reporting this problem.
We will investigate it and we will try to address it in some of our next versions.

Please, excuse us for the inconvenience caused. I have updated your Telerik points.
 
Best wishes,
Yordanka
the Telerik team

[Yordanka]

Hello StackOverflowed,

We have tested the scenario with our latest internal build - version .0322 and scrolling is now working correctly. Please, give it a try and let us know if you still experience the issue.
 
Best wishes,
Yordanka
the Telerik team