ScrollViewer bug when grouping

[Radiation]

There is a bug in RadListBox when using GroupStyle. When I select any an item from second group, radlistbox scrolls to first item in second group. This makes double click on an items almost imposible.

I wrote a simple sample demonstrating the behaviour with comparison to regular listbox

<Window x:Class="RadControlsWpfApp2.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:local="clr-namespace:RadControlsWpfApp2"
  Title="MainWindow" Height="350" Width="525">
  <Window.DataContext>
    <local:MainWindowVM />
  </Window.DataContext>
  <Grid>

    <StackPanel Orientation="Horizontal">
      <ListBox x:Name="listbox" ItemsSource="{Binding CollectionView}" IsSynchronizedWithCurrentItem="False" DisplayMemberPath="Name" FontSize="20" MinWidth="150">
        <ListBox.GroupStyle>
          <GroupStyle  />
        </ListBox.GroupStyle>
      </ListBox>



      <telerik:RadListBox x:Name="radlistbox" ItemsSource="{Binding CollectionView}"  DisplayMemberPath="Name" FontSize="20" MinWidth="150" Margin="20,0,0,0">
        <telerik:RadListBox.GroupStyle>
          <GroupStyle  />
        </telerik:RadListBox.GroupStyle>
      </telerik:RadListBox>
    </StackPanel>
  </Grid>
</Window>

using System.Collections.Generic;
using System.Windows.Data;

namespace RadControlsWpfApp2
{
  public class MainWindowVM
  {
    public List<ItemVM> Collection { get; set; }

    public ListCollectionView CollectionView    {      get;      set;    }

    public MainWindowVM()
    {
      Collection = new List<ItemVM>
      {
        new ItemVM { Group = "A", Name = "Item 1" },
        new ItemVM { Group = "A", Name = "Item 2" },
        new ItemVM { Group = "A", Name = "Item 3" },
        new ItemVM { Group = "A", Name = "Item 4" },
        new ItemVM { Group = "A", Name = "Item 5" },
        new ItemVM { Group = "A", Name = "Item 6" },
        new ItemVM { Group = "B", Name = "Item 1" },
        new ItemVM { Group = "B", Name = "Item 2" },
        new ItemVM { Group = "B", Name = "Item 3" },
        new ItemVM { Group = "B", Name = "Click Here!" },
        new ItemVM { Group = "B", Name = "Item 5" },
        new ItemVM { Group = "B", Name = "Item 6" },
      };

      var view = new ListCollectionView(Collection);
      view.GroupDescriptions.Add(new PropertyGroupDescription("Group"));
      CollectionView = view;
    }


  }

  public class ItemVM
  {
    public string Group { get; set; }
    public string Name { get; set; }
  }
}

[Radiation]

There is also another bug. The RadListBox is not visible in Visual Studio designer!

Using VS2012 Update 2, telerik radcontrols v2013.2.611.45

[Daniel]

No answer?

[Ventzi]

Hello Andrej,

Thank you for reporting this bugs.

We've logged it into our bug tracking system and we hope we will be able to fix it for Q3 this year, but can't promise that it will be done for this short period.

Your Telerik points were updated for your cooperation and we're sorry for the inconvenience caused.

Regards,
Ventzi
Telerik

[Guy]

Hi

We have got the same problem with a grouped RadListBox - is there any solution or workaround to this? We are using 2015.1.401.40.

Thanks,

Guy

[Nasko]

Hello Guy,

The issue hasn't been fixed yet and unfortunately there isn't any proper workaround that we could suggest you. However, we have logged it in our Feedback portal. On the following link you could vote for the item and track its status:
http://feedback.telerik.com/Project/143/Feedback/Details/156570-radlistbox-is-not-able-to-scroll-to-item-when-the-items-are-grouped

We apologize for any caused inconvenience. 

Regards,
Nasko
Telerik