As a workaround, the ScrollingSettingsBehavior.ScrollStep attached property of the RadListBox control can be set to a value equal to that of the Height of the RadListBoxItems.

Available in R3 2017 Official Release Version.

ListBoxItem disappears when the item is dropped in the RadGridView

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

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. 

When the ItemsPanel of the RadListBox is RadWrapPanel and the user press Down/Up key the RadListBox selects always the next/previous item instead of the corresponding item on the next/previous row.

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.

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

Using an attached property to populate the SelectedItems of the control initially selects only the first item.

A sample project (ListBoxSelectedItems - Example) of the used approach can be found in this blog post:
http://blogs.telerik.com/xamlteam/posts/13-01-14/extending-the-functionality-of-radcontrols-with-attached-properties

Currently the scrolling is not behaving as expected.

The exception is caused when running the project in debug mode. 

Use case that hits the described issue:

When binding another control to a shared SelectedItem property from a ViewModel causes the Item to not be updated correctly to the ListBox and the anther control.

Available in LIB version 2016.1.321, it will be also available in the 2016 Q2 Release.

Currently only the "Up" and "Down" keyboard keys perform navigation. It would be useful if the "Left" and "Right"keys are also used for navigation.

The navigation should be as follows:
- Left goes left
- Right goes right
- Up goes up
- Down does down

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

It would be great to have ScrollPositionIndicatorTemplate for RadListBox, similar to RadGridView (see RadGridView's implementation here http://docs.telerik.com/devtools/wpf/controls/radgridview/features/scrolling).

Introduce a feature where a scroll position indicator is displayed when the deferred scrolling is enabled (ScrollViewer.IsDeferredScrollingEnabled=True). The scroll indicator is a small tooltip displayed next to the scrollbar and displaying information about the potential item that should be displayed at the top of the viewport. 

This is the same as in RadGridView's ScrollPositionIndicator. You can check this in the following help article: (http://docs.telerik.com/devtools/wpf/controls/radgridview/features/scrolling#scrollpositionindicator). See also the attached video.