This is still an issue with Xcode 16.2 and iOS 18.2. The UINavigationBarDelegate method navigationBar(_:shouldPop:) is not called as expected when running an app in debug mode / with "debug executable" checked (attached to Xcode). It works as expected and according to documentation only in release builds or when unchecking "debug executable" in Product -> Scheme -> Edit Scheme… -> Run -> Info This issue causes confusion during development and testing. Perhaps the accepted answer should not be accepted, since it is still an issue (that it doesn't work according to documentation in debug mode)?

Isn't that unrelated to the issue I described? (The selectedValue doesn't need to affect ContentView in order to demonstrate the issue.) Here is the issue again: While the sheet is open, and I try to scroll through the picke's items, it is impossible to reach to the bottom, because it will scroll back to the top once every second, each time the randomByte is updated. Why is this, and how can I make the picker in the sheet not reset/scroll back to the top every time randomByte is updated?

Thanks Developer Tools Engineer, I cannot use Xcode 15 / #Preview macro in this project, but replacing the Group with a ZStack works!