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Summary Since macOS 26, our Core ML / MPS inference pipeline produces incorrect results on Mac mini M1 (Macmini9,1, A14-class SoC). The same model and code runs correctly on M2 and newer (A15-class and up). The regression appears to be in the Scaled Dot-Product Attention (SDPA) kernel path in the MPS backend. Environment Affected Mac mini M1 — Macmini9,1 (A14-class) Not affected M2 and newer (A15-class and up) Last known good macOS Sequoia First broken macOS 26 (Tahoe) ? Confirmed broken on macOS 26.3.1 Framework Core ML + MPS backend Language C++ (via CoreML C++ API) Description We ship an audio processing application (VoiceAssist by NoiseWorks) that runs a deep learning model (based on Demucs architecture) via Core ML with the MPS compute unit. On macOS Sequoia this works correctly on all Apple Silicon Macs including M1. After updating to macOS 26 (Tahoe), inference on M1 Macs fails — either producing garbage output or crashing. The same binary, same .mlpackage, same inputs work correctly on M2+. O

Hey everyone, I purchased an Apple Developer Program for 99 USD on January 1 2024, filled out my credit card that I use for iCloud+ storage plan, got my confirmation email that within 48h my developer account should be activated, but it never did. Plus after waiting more than 48h I wrote to support, describing everything, but never heard back from them. One thing I noticed during the checkout was I was asked for everything (name, address, CC number, expiry date) but not the CVV number. Is this normal, and would Apple be able to process the payment without it? I though about going through the enrolment process again, but am afraid of a double charge, in case my original enrolment gets accepted... Please advise and share your experiences when enrolling to the developer program. Thanks!

Hi, I’m stuck with submitting a Game Center leaderboard and wanted to ask if others are seeing the same issue. My setup: App is already live on the App Store Game Center capability is enabled Leaderboard works perfectly in TestFlight (scores are submitted and visible) Problem: When I try to submit the leaderboard for review, I get: “A Game Center enabled app version must be added for review.” This is confusing because: The app already includes Game Center The app is already approved and published Apple documentation says Game Center components can be submitted without a new app version I also tried recreating the leaderboard and checking all settings, but the issue persists. Is this a known App Store Connect issue? Or is there something I’m missing? Thanks!

I have been unable to renew my Apple Developer Program membership since March 28, 2026. The Renew button does not appear anywhere. I have submitted 3 support tickets (Case ID: 102864696639, 102861948474, 102858980607) with zero response over 12 days. My app Fiskal - Docloop has been removed from the App Store. Team ID: 2S4RNY42SZ. This is causing serious business impact. Please help.

According to this comment in the sample project on GitHub and this answer by Apple Staff, CKSyncEngine should be re-initialized after signing out or switching accounts so that CKSyncEngine schedules a new fetch on init. But according to my tests, CKSyncEngine will schedule a fetch after having a signed out and signed in again, without me ever having to reset the serialized sync state. The documentation doesn't mentioned anywhere that CKSyncEngine should be re-initialized after an account change. In fact, it states that CKSyncEngine will reset its state internally on account changes. So if that's the case, then I'm very confused as to why the official recommendation is to re-initialize CKSyncEngine after receiving .signOut or .accountSwitch. Can someone please clarify the correct approach here?

Hi everyone, I purchased an Apple Developer Program membership about three days ago. The payment has already been successfully charged to my bank account, but my account is still showing the status “Pending” with the message “Subscribe your membership.” I haven’t received any confirmation email or any request for additional information since completing the purchase. I’m curious if others have experienced a similar delay recently, and how long it took before your developer account was fully activated. Any insights or experiences would be greatly appreciated. Thanks in advance!

Hi everyone, I have a question regarding the intended privacy limits of the DeviceActivityReportExtension. According to the documentation and the WWDC21 session Meet the Screen Time API, this extension was created specifically to prevent the host application from accessing the user's underlying activity data (websites visited, app usage, screen time, etc). But I have found that my host app is actually able to reconstruct this raw activity data from the activity report. I am able to extract specific visited websites and app usage durations back into the main app. I reported this to Apple Security (Case ID: OE1100504480881 ), assuming it was a sandbox bypass. However, they closed the ticket stating that this is expected behavior and requires no fix. My question for Screen Time Engineers: Is the documentation incorrect? If my host app is expected to be able to read this data, is there a formal API we should be using instead of extracting it from the report extension? The current behavior contradicts the

We are trying to upload the first Apple-hosted Managed Background Assets pack for our macOS app, but Transporter rejects the asset pack ID during upload. App details: App name: DistillApp Apple ID: 6760288806 Bundle ID: cn.rkbkosp.DistillApp Asset pack ID: distill.pipeline.zh-baseline Platform: macOS Transporter: 1.4 Xcode: 26.2 macOS: 26.3.1 What we see in Transporter: Apple ID: 6760288806 App Name: DistillApp App Bundle ID: cn.rkbkosp.DistillApp No background assets found. And when we try to upload the first asset pack, Transporter fails with: 获取 Apple ID “6760288806”的资源包列表失败。 (-19243) There is an error with a URL parameter (400) Found invalid values: distill.pipeline.zh-baseline What we have already confirmed locally: The app resolves correctly in Transporter, so the Apple ID and bundle ID appear to be correct. The app Info.plist includes: BAHasManagedAssetPacks = YES BAUsesAppleHosting = YES BAAppGroupID = 8U6DAJ62JT.group.cn.rkbkosp.DistillApp.assets The asset

I submitted an app rejection appeal on March 7 and there has been no update of any kind for over 30 days. I’m posting here to reach the support team and to see if there’s a way to follow up with the process. Thank you for your help.