Keyboard navigation for the RadTreeView control should neglect invisible nodes when deciding which node to select based on user navigation. To know what I mean, please try the following: - Navigate to the example at http://demos.telerik.com/aspnet-ajax/treeview/examples/functionality/keyboard/defaultcs.aspx - In the console of the developer tools of your browser, type the following: $telerik.findTreeView("ctl00_ContentPlaceholder1_RadTreeView1").get_nodes().getNode(0).get_nodes().getNode(0).set_visible(false) This will hide the "Calendar" tree node. - Using your mouse, click on the "Mailbox - John Smith" root node. - Press the ↓ key once. Notice how the selection disappears, while it should have gone to the "Contacts" node. - Type the following in the console: $telerik.findTreeView("ctl00_ContentPlaceholder1_RadTreeView1").get_selectedNode().get_visible() The console prints "false" which means that the currently selected node is invisible, which is a wrong behaviour. - Press ↓ once again, and the "Contacts" node will be selected. This problem annoys me because I have a situation where I hide tree nodes based on what the user types in a filter text box. After the user filters the tree and tries to navigate using the keyboard, the procedure becomes weird.