Swift project - AppDelegate application(open:options) not called

Hi,

class AppDelegate: NSObject, UIApplicationDelegate, ObservableObject {
  
  func application(_ application: UIApplication, willFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
    print("AppDelegate: application(willFinishLaunchingWithOptions)")
    return true
  }
  
  func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:]) -> Bool {
    print("AppDelegate: application(open:options)")
    return true
  }
}

use scheme simpletest://what in Safari can bring the app from background to foreground, but application(open:options) is not invoked.

application(willFinishLaunchingWithOptions) is always called.

The Swift projct is clean and only with XCode generated demo code except the AppDelegate.

Can anybody please help?