To reproduce: 
1. Drag and drop RadPageView on the form
2. Select the control and open a smart tag 
3. You will see that the 'Dock in parent container' option is not added 

ADD. RadPageView - allow RadPageViewItems to accept other RadElements. Currently, they are not arranged.

IMPROVE. RadPageView - in ExplorerBar mode, add a method which will scroll the item into view and the item will be on the top on the control. Currently, the ScrollToItem method, scrolls to the item and whenever it finds it the scrolling is stopped. 
Alternatively, add a method which will ensure that the item and its content are is visible.

Resolution: 
Add the ScrollToControl method. Please take a look at the following code snippet how to use it: 
RadPageViewExplorerBarElement view = radPageView1.ViewElement as RadPageViewExplorerBarElement;            
view.ScrollToControl(control);

It would be nice if RadTabStrip/RadDock can support multiple rows of tabs.

A nice addition to the Pages collection of RadPageView will be the ability to get a page by its name.

There should be a property at RadPanelBar which gets/sets the selected group.

ADD. RadPageView - create new strip items layout mode, allowing to arrange them in rows.

Add scroll to a PanelBarGroupElement functionality

Add a Visible property to RadPageView Pages for all modes

There should be such property which is available in the properties window. The property should get/set the default selected page for a RadPageView when it is loaded for the first time. Also, this property should not be affected by changing the selected page in the Visual Studio designer.

Currently, when trying to replace the item, exception is thrown.

Provide an easier way to change the size of the tabs panel of RadPageView in Backstage mode at design time.

There should be a method called BeginEdit of the item, which puts it in edit mode. Also, when the user pressed F2 the item should begin editing. The latter should be controlled via AllowEdit property.

Currently it is not possible to scroll to the active page when expanding or selecting it in explorer view.