Have the same problem too. Tried the 12.2 beta but no difference. I can run Instruments on a physical device though.

I resolved the console messages by adding the new watchOS 7 App struct. The WKExtensionDelegate protocol conformance isn't required, but I added it for completeness. Move code from your extension delegate to your new App struct. import SwiftUI @main structMyWatchApp: App {   @WKExtensionDelegateAdaptor(MyWatchAppDelegate.self) var myWatchAppDelegate       @SceneBuilder var body: some Scene {     WindowGroup {       ContentView()     }   } } class myWatchAppDelegate: NSObject, WKExtensionDelegate {   }