Is the corner resizing in fullscreen mode or not?Yes to resizing diagonally. Yes to going to titlebar and hitting the green circle to exit fullscreen mode. No to resizing a fullscreen window without first exiting fullscreen mode.
For the title bar, you aren’t going to the traffic light navigation. You just press and hold and swipe down on the title bar to exit fullscreen mode. I still think multitasking on ipad is a way easier experience than that on a mac. Like just not having the windowing resizing when a video is in fullscreen view will be compromise for me getting a macbook in the future. Its like 10x better than PiP mode.