External screen support in full size

Would be great to see this in future. Like shiftscreen, it should be possible to not only mirror the screen to an external monitor, so you can use a web browser in full screen on a connected second screen, while using your main screen most for other apps. It would work like an extended monitor, which isn’t available at ipados 15 right now. This would make this browser great for many users who like to use their iPad for studying stuff.