If you move an item from one level to another into the tree, the indent of the corresponding row won't get updated. This is reproducible only if the new parent of the moved item is expanded, while the operation is executed.

Usually, this can be reproduced by calling the ExpandHierarchyItem() for the new parent item method just after the moving of the original item.

To resolve this you can delay the expanding of the item. Note that the expanding is executed manually by calling the ExpandHierarchyItem() method. So, you can use a dispatcher with a lower DispatcherPriority to delay this.

Or alternatively, you can collapse the item before expanding it (using the CollapseHierarchyItem() method).

As a workaround you can try executing the selection in a Dispatcher with DispatcherPriority.Render.
This may not apply in the case when there are many nodes outside the View area. 

Sometimes the cells from more than one row are copied even though the SelectionMode is Single. As a workaround, you can clear the SelectedCells collection of the control in the Copied event:

By default the AutoExpandItemsAfterFilter property of RadTreeListView is set to True, which means that when you filter the data, the parents of all found child items will be expanded automatically. However, if you call the CollapseAllHierarchyItems method this functionality stops working.

To work this around, you can reset the ItemsSource property instead of using the CollapseAllHierarchyItems.

 

Items are expanded when they match the filtering criteria.

Once I added the filterdescriptor, the tree started to expand itself
and when I put a break point in RowIsExpandedChanged event handler
the treelistviewrow's IsExpanded property is already true

Can you have a look at the attached sample application
and try to achieve the following:
1. keep the on demand load (so only loadchildren when user clicked on the arrow to expand)
2. apply filter only on the expanded nodes

Reproducible on http://demos.telerik.com/silverlight/#TreeListView/TreeListViewDragAndDrop

The gray background that is shown when you hover an item is not hidden when the pointer leaves the item. That happens when you scroll on a touch device. 

To work this around, you can hide the pointer over background completely. To do this, you can edit the ControlTemplate of RadListView item and remove the Setter from the PointerOver Visual State.