Thanks, I will file a bug report now. I am running macOS Big Sur Version 11.5.2 (20G95), on a MacBook Pro (Retina, 15-inch, Mid 2014). This happens on both Xcode 11.7 and Xcode 12.5.1, on all simulators (iOS 12, iOS 14) and on an iPhone Xs running iOS 14.8, as far as I tested.

Feedback number 9654037.

Any update on this bug? I still cannot add conditional code using if #available(iOS 15.0, *) {. It crashes on iOS 14 with "dyld: Symbol not found:". Using Big Sur and Xcode 13.

However the Pause problem still remains. It can be overcome by using a workaround.

I agree that this behavior should not affect the code as long as it is implemented by following the guidelines and rules defined by the SwiftUI framework. However, I think it is important to understand how these things work under the hood. For example, it might help you when you do actually encounter a bug in the framework, like it seems to be the case here https://developer.apple.com/forums/thread/692527

Worked. Thanks!

Did you get any response from Apple on the reported bugs? Especially FB7137454, I am experiencing the same issues with "UnknownID".

I have submitted bug report FB11965703. Will update here if I get a response.