iPadOS - Bring back using the fullscreen when opening an item

Hi,

One of the recent updates changed the UI. Now when I open an item in the iPad app, it opens in a smaller sub-window. This seems to be wasting screen space for a fullscreen app and I have to scroll more. It’s worse in landscape orientation. I feel this is a general downgrade in the UI experience. I know other apps (even Apple’s) does this and I feel those are also wasting screen space.

Can we get back the original behavior where the opened item takes up the full screen?