We have tried to reproduce the issue on our side, but with no success. That is why I would like to ask you for more information about your scenario:
- do you have nested TabControls?
- what is the XAML that you are using for you View?
- do you have any custom styles?
- what are the steps that lead to that behavior? Simply changing the TabItems ?
Also if you could send us an isolated project reproducing the issue will help us better understand your scenario and provide you with the best possible solution.