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.
The goal is to expand a second node each time you expand a particular node from the RadTreeListView. The data of the second node is loaded on demand, but it is not shown when the node itself is expanded.
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).
Per the thread at "http://www.telerik.com/forums/isexpandablebinding-requires-user-interaction-with-control-to-take-effect" I have modified the IsExpandedRowBinding sample to recreate the problem. I modified the button to expand and collapse the first row. To reproduce the problem: 1. Expand the first row. 2. Scroll down so the first row is not visible but it's children are visible. 3. Press the button. The expected behavior is the first row should collapse but nothing happens. 4. Scroll up so the first row is visible. The first row collapses.