Prime Video Xbox App What is going on on???

Simply opened prime video on my xbox one to look at some stuff and all the pieces I click on on now has an enormous black bar on the prime of the display screen???.

Was by no means like this earlier than right now, was effectively used to having equal black margins on the highest or sides which you’d usually count on however that is simply actually irritating, prefer it's actually distracting to the to the purpose I can barley keep targeted.

Unsure if there was a latest replace?, I haven't modified any settings on my xbox or TV so I'm at an entire loss to what to do.

Anybody else having this subject?