I believe that is temporary and would only impact features like Liquid Glass that are opt-in based on the SDKs you've built against. The windowing changes are being applied to our apps even if we're still building with Xcode 16.

In the session Elevate the design of your iPad app, they say "Every app that supports multitasking now shows a handle in the bottom right corner." This suggests that there is still a way to opt out of multitasking and the windowing experience. If UIRequiresFullScreen is deprecated, and apps will soon be required to adopt UIScene-based lifecycle, what are they referring to?

Thanks for the quick reply! This is looking much better on iPadOS 18 beta 6. The transition from View Controller 1 to View Controller 2 is fluid and the safe area insets look correct. I am still seeing a slight issue during the push transition from View Controller 2 to View Controller 3. View Controller 2's background is briefly visible in the top bar area before it abruptly disappears and the nav bar size jumps to its new position.