Fullscreen issue on Tv+ Windows app

Hey, i am currently trying to watch some tv shows with my Apple tv+ subscription. I first tried using the browser for streaming which works just fine. But since i wanted the quality benefits of instead using the app i downloaded it from Microsoft store.

However, when i try to watch any kind of movie, show or just any medium. it won't go fullscreen. When i try to turn it into fullscreen. It just covers half the screen, the lower half, while the option to shrink again is on the top part where it's just transparent to whatever program i have in the background. I have no idea if it's just a bad build or something i myself can fix. My screen resolution is 1920x1080 if that helps.

Thanks beforehand,

Some confused fella