Open Radar

 
A `UIHostingController`’s root view fails to receive any touches (including from trackpad pointer) on VisionOS 1.0 and 1.1 if the hosting controller’s `view.layer.zPosition` is set to a value greater than +50 or less than -49. Values from -49…50 don’t cause any issues. See example project for a minimal repro.

This is causing major issues for the Airbnb iPad app (which is available on visionOS via the iPad app). Core UI components, like the search bar and the listing card shown on the map, cannot receive “touches” on visionOS.

============

final class ViewController: UIViewController {

  override func viewDidLoad() {
    super.viewDidLoad()

    let hostingController = UIHostingController(rootView: TestView())

    hostingController.willMove(toParent: parent)
    addChild(hostingController)
    view.addSubview(hostingController.view)
    hostingController.view.translatesAutoresizingMaskIntoConstraints = false
    NSLayoutConstraint.activate([
      hostingController.view.centerXAnchor.constraint(equalTo: view.centerXAnchor),
      hostingController.view.centerYAnchor.constraint(equalTo: view.centerYAnchor),
    ])
    hostingController.didMove(toParent: parent)

    // Breaks touch handling if zPosition is outside of the range -49...50
    hostingController.view.layer.zPosition = 51
  }

}

private struct TestView: View {

  @State private var state = false

  var body: some View {
    Rectangle()
      .fill(state ? Color.red : Color.blue)
      .frame(width: 100, height: 100)
      .onTapGesture {
        state.toggle()
      }
  }

}