Update: it didn't help, the newly released update built on 17A324 still crashes on iOS 26 on iPhone 11. I'll file a feedback report with the crash.

Does version mismatch affect already released builds? We have submitted an update using an Xcode RC build (17A321) after the keynote, the latest build number of Xcode is 17A324. I wonder if simply resubmitting will fix the crash.

Same thing happens to our users, but somehow only on iPhone 11 with iOS 26 installed. The error message is exactly the same. In our case we have a menu with a label that has a glass effect on iOS 26: private var sizeSelector: some View { Menu { // ... } label: { if #available(iOS 26.0, *) { HStack(spacing: 8) { // ... } .glassEffect(.regular.tint(.secondaryBackground.opacity(0.8)).interactive(), in: .capsule) } else { HStack(spacing: 8) { // ... } .background(Color.secondaryBackground) .clipShape(RoundedRectangle(cornerRadius: 12)) .tint(.primaryText) } } }