I'm a newbie to iOS and watchOS dev, but I have built an app in SwiftUI that is running on both platforms and I am trying to get WKExtendedRuntimeSession behaving as expected. I have added the Extended Mode for the WK extension and have selected Mindfullness which I understood would allow the app to stay active until dismissed or timed out (1hr).

In the view that I want to keep running I initailized a session

var session = WKExtendedRuntimeSession()

and start it when the view appears

.onAppear() { // Start the session object. self.session.start() ... }

and of course invalidate whenever the user quits

 session.invalidate()

 but the behavior seems to be the same with the app going into a background mode after about 10 secs and then if I raise my wrist the animation and sounds are still playing along with the countadown timer but I was expecting it to stay alive until either the user qiut or the timer ran out.  

 Am I missing something here?  Is there a way to debug this since I don't really know if the session is actually working or if I am misunderstanding how this is supposed to work.  Any help will be greatly appreciated...