iPadOS 16 added stage manager and iPadOS 16.2 added external monitor support for iPadOS 16.2 stage manager, meaning that all ”app windows” can be resized. When my iPad is attached to an external monitor (mouse and keyboard are also connected) I cannot resize the minecraft window. It only supports 4:3 iPad resolution on the screen. I wish that I could resize it in any way that I want, but most importantly being able to use full screen on any monitor of any aspect ratio and resolution.

Link to screenshot:

https://share.icloud.com/photos/052RRN2bFTcc4dqTOphHwB_9A

As explained, the minecraft window is locked to this size on my screen