I would like to see the visual feedback (red frame about the control and the error message inside) when the binded property has an error message in a error collection.

Implement a public event that is triggered when selection has been made by the user interaction. This even could be useful when a custom logic should be handled when a user selection has been made in the control but not when the change has come from the ViewModel.

Available with the R3 2016 SP1 release. 

Available in LIB version 2016.3.1017, it will be also available in the 2016 R3 SP1 release. 

When the ItemsPanel is set to VirtualizingStackPanel which Orientation is set to Horizontal, selecting an item moves it to the rightmost position.

Available in LIB version 2016.3.1017, it will be also available in the 2016 R3 SP1 release. 

RadListBoxItems looks selected when BusyIndicator is made busy

ListBoxItem is going to the last position when dragged and dropped in to the SCrollViewer.

ListBoxItem disappears when the item is dropped in the RadGridView

Add SelectedItemsSource property which can be bound to a collection in the view model. In this case when the RadListBox is in Multiple/Extender mode, the selection can be manipulate from the ViewModel.

This happens when using VirtualQueryableCollectionView as the ItemsSource.

I have a custom ListBox that inherits from RadListBox control which uses a VirtualizingWrapPanel as its ItemTemplate.
I am trying to use BringIndexIntoViewPublic method to bring a certain ítem that is still not created into view, but it does not work. I also try to use ScrollIntoView of the RadListBox, and is also not working.

Add AlternationCount, AlternateBackground and ItemLoaded event just like the RadGridView ones.

Scroll button is changing size when grouping is applied (WPF only).

When drag and drop and reorder are allowed dropping an item after the last item in the control  requires the drop to be exactly after the last item and there is very little space between the item and the outer border of the ListBox

When RadListBox is in a ScrollViewer and its own ScrollViewer is removed, it uses the external ScrollViewer for calculating DropVisualPlaceHolder position.

For example if there are the following items: "Item", "Item 2", "Item 3"
when the RadListBox has the focus typing "Item 2" does not highlight the corresponding item in the ListBiox control.

Available in LIB version 2016.2.525, it will be also available in the 2016 R2 SP1 release.