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.