StackOverflow issue on ----> Move focus on GridView item one by one
Through a series disscussion with MS tech, we confirmed that:
Xbox Settings> Display&Sound> Video output, under "Advanced" select "Video fidelity & overscan" You will see an option that says "Apps can add a border", turn if off.
This can solve the card alignment problem, but currently there is no api for developers to turn it off using code.
And I created a UserVoice ----> Card Alignment Bug On Xbox