hey guys, To illustrate the issue, which i think is a bug with UISplitViewController, i have created a sample project which creates 3 tabs at the bottom - the first tab has a splitview controller with master and detail views, the second tab has a view and the 3rd tab also has another splitview controller with master and detail views. The xcode project and files are attached as a .zip. We will need 4.3 SDK as base SDK. STEPS Run the app in portrait mode. We can see the 3 tabs Tab 1 - SplitView1 Tab 2 - Ordinary View Tab 3 - SplitView2 Go to Tab1 and Tab3 - we can see the popover button on the toolbar. Go to Tab1 - Switch to landscape - popover button dissapears Go to Tab3 - popover button remains in landspace mode!! BUG! Can anyone validate this and point what am doing wrong?