22 Mar 2021 07:13
TabControl: Wrong selection in the overflow drop down when the drop down items are reordered
This happens if you use the DropDownOpened event of RadTabControl in order to reorder the DropDownItemsSource of the event arguments. In this case, the synchronization of the selection between the drop down and the tab items is broken.
To work this around, you can disable the default overflow button and implement a custom one in the AdditionalContent of RadTabControl. Check the attached project for a sample implementation.