Preserve the content of tabs during tab reorder

ItemsSource does not support CompositeCollection

Click event of a Button in the HeaderTemplate is not fired properly when another button outside the tab has IsDefault property set to true

Fire the PreviewSelectionChanged event before user-initiated selection

When navigating with tab key (without setting tabindex) first highlights the RadTabItem then its content. Setting a tabindex on a control in the tabItem`s content works the opposite way

When the RadTabControl AllowDragReorder property is set to True and the control contains multiple rows with tabs, the dragging operation cannot be properly executed and completed.

In the VS2010 designer the selected tab is the last one even if the SelectedIndex proeprty of the TabControl is set to 0. The issue can be reprodiced in a scenario where the RadTabControl is defined in a RadWindow control.

Using Xaml declared tab control with identical tab item headers will result in selecting the first occurance of selected text from the drop down content.
Add support for distinguishing different items in the drop down content (use DropDownDisplayMode=Visible) during selection and match to the corresponding TabItem.

Pressing "Tab" key does not change the focus when there are several controls in a TabItem.

SelectedItem does not respect the Reset collection changed action.

ICommandSource implementation for RadTabControl. It might be implemented either as CLR and dependency properties, or as attached behavior.

The animation when moving tab is mandatory for a proper user experience.

Improve the design-time support of the TabControl. For example add an option to add new RadTabItems in the control.

Add a visual state for the selected tab item representation in the DropDown menu of the TabControl.

The selected item could have a different header template so that it will be differentiated from the rest of the  tabs.

When you have implicit DataTemplates applied to items the binding expression is lost on selection changed.

RadTabControl is currently designed to support scrolling of RadTabItems only when any of them is currently focused. An ability to scroll RadTabItems without explicitly focusing them should be provided.

When the window of an application that has a TabControl with Left/Right TabStripPlacement is resized, the measure of the TabStrip is incorrect and the ScrollButtons are in Disabled state. All Tabs should be visible when the window is in its normal state and should be scrollable.

Introduce "Add new tab" button as in the RadTabbedWindow control which creates a new tab upon click.

Can't apply transitions when changing the visual state of the RadTabControl or its items