While mutable push notifications process properly in a cousin Catalyst/iOS app, my macOS app does not execute methods in its Notification Service extension to mutate notification content before presentation (when app is active, in background, or terminated). Console logs (below) show the Mac extension is found and launched, but then killed for "sluggish startup". It is the vanilla new file stub with zero dependencies. I'm doubtful this matters, but I am running Monterey RC1/Xcode 13 RC on an M1. What am I configuring improperly? Objective Push a remote notification ~once a month to download a file, locally process user data, and then silence or display a modified alert accordingly. I've Tried Per macOS Notification Service Extension not being used Ensured sandboxed Enabled "Incoming Connection (Server)" (no difference) Wipe DerivedData Run on naive second Mac Per Notification Service Extension Not working Rebooting the Mac Ensuring the deployment target of the app and extension are identical Received Notification From application(_ app: NSApplication, didReceiveRemoteNotification userInfo: [String : Any]) ["customThing": value, "aps": { alert = "Push Mutable"; "mutable-content" = 1; sound = default; }] Signing/Capabilities App Debug/Release Sanboxed w/ outgoing connections Hardened runtime iCloud Push (certificates) Automatic signing w/ cert Notifications Extension Sandboxed Hardened runtime Automatic signing Extension class NotificationService: UNNotificationServiceExtension { var contentHandler: ((UNNotificationContent) -> Void)? var bestAttemptContent: UNMutableNotificationContent? override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) { self.contentHandler = contentHandler bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent) if let bestAttemptContent = bestAttemptContent { bestAttemptContent.title = "[modified]" bestAttemptContent.body = "Changed" contentHandler(bestAttemptContent) } } override func serviceExtensionTimeWillExpire() { if let contentHandler = contentHandler, let bestAttemptContent = bestAttemptContent { contentHandler(bestAttemptContent) } } } Console Perhaps relevant? usernoted <IDENTIFIER> Extension will be killed due to sluggish startup error serviceExt com.apple.unc usernoted LogFromBuildToNotificationPush.txt

I guess this is more of a public question for Apple: can/will tide data be packaged into WeatherKit? (FB10383248)

Goal With an MTKView, replicate the gravity of the AVCaptureVideoPreviewLayer or Apple's Camera app. Video device orientation does not change. The camera feed's edges do not budge a pixel, never revealing the screen background. Other on-screen VCs rotate normally. Observed Applying Tech QA 1890's transform during viewWillTransition, the MTKView does counter-rotate... BUT that rotation is still uncomfortably visible. The edges of the view come unpinned during the animation, masking some camera pixels and showing a white background set for the VC holding the MTKView. Question How can I make those edges stick to screen bounds like a scared clam? I assume my error is in constraints, but I'm open to being wrong in other ways. :) View Hierarchy A tiny camera filter app has an overlay of camera controls (VC #1) atop an MTKView (in VC #2) pinned to the screen's edges. UINavigationController │ └─ CameraScreenVC │ ├── CameraControlsVC <- Please rotate subviews │ └── MetalCameraFeedVC └── MTKView <- Please no rotation edges Code Buildable demo repo Relevant snippets below. MetalCameraVC.swift final class MetalCameraVC: UIViewController { let mtkView = MTKView() // This VC's only view /// Called in viewDidAppear func setupMetal(){ metalDevice = MTLCreateSystemDefaultDevice() mtkView.device = metalDevice mtkView.isPaused = true mtkView.enableSetNeedsDisplay = false metalCommandQueue = metalDevice.makeCommandQueue() mtkView.delegate = self mtkView.framebufferOnly = false ciContext = CIContext( mtlDevice: metalDevice, options: [.workingColorSpace: CGColorSpace(name: CGColorSpace.sRGB)!]) } ... func mtkView(_ view: MTKView, drawableSizeWillChange size: CGSize) { // blank } func draw(in mtkview: MTKView) { image = image.transformed(by: scaleToScreenBounds) image = image.cropped(to: mtkview.drawableSize.zeroOriginRect()) guard let buffer = metalCommandQueue.makeCommandBuffer(), let currentDrawable = mtkview.currentDrawable else { return } ciContext.render(image, to: currentDrawable.texture, commandBuffer: buffer, bounds: mtkview.drawableSize.zeroOriginRect(), colorSpace: CGColorSpaceCreateDeviceRGB()) buffer.present(currentDrawable) buffer.commit() } } extension MetalCameraVC { override func viewDidLoad() { super.viewDidLoad() view.addSubview(mtkView) } override func viewWillAppear(_ animated: Bool) { super.viewWillAppear(animated) mtkView.frame = view.frame if let orientation = AVCaptureVideoOrientation.fromCurrentDeviceOrientation() { lastOrientation = orientation } } } +Rotation /// Apple Technical QA 1890 Prevent View From Rotating extension MetalCameraVC { override func viewWillLayoutSubviews() { super.viewWillLayoutSubviews() mtkView.center = CGPoint(x: view.bounds.midX, y: view.bounds.midY) } override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) { super.viewWillTransition(to: size, with: coordinator) coordinator.animate { [self] context in let delta = coordinator.targetTransform let deltaAngle = atan2(delta.b, delta.a) var currentAngle = mtkView.layer.value(forKeyPath: "transform.rotation.z") as? CGFloat ?? 0 currentAngle += -1 * deltaAngle + 0.1 mtkView.layer.setValue(currentAngle, forKeyPath: "transform.rotation.z") } completion: { [self] context in var rounded = mtkView.transform rounded.a = round(rounded.a) rounded.b = round(rounded.b) rounded.c = round(rounded.c) rounded.d = round(rounded.d) mtkView.transform = rounded } } }