Currently, if you create a control that derives from RadTabbedWindow and then drag out a tab to create a new window, the newly created window is of type RadTabbedWindow. This feature will be useful if you want the newly created window to be the same type as the custom window that initializes the new window creation.

TabbedWindow with 2 tabs, each tab has Frame which almost fully covers the content.

Step 1) Drag drop a tab to the visible content. 2) Then bring it back to the first window with drag drop. Step 1 is now impossible - no window is created after drag out of tab strip and drop onto the content.

Possible workaround: Set AllowDrop to True to the control (in this case frame) in the content of the RadTabItems.

Click and move a control which is hosted in the Content of the RadTabItem starts dragging of the tab which is unexpected.