Hello, Thank you for your reply. Here are the details we observed: • iOS 18.6.2 (current release): authenticateHandler is invoked consistently — both when the Game Center sign-in UI appears and when the user taps Cancel. • iOS 26.0 beta 1 (first available build): Regression begins here. The Game Center sign-in UI is shown automatically, but pressing Cancel does not invoke authenticateHandler. The app receives no callback. • All subsequent iOS 26 betas (beta 2, beta 3, and the latest beta): Same behavior as beta 1. The issue has been reproducible across every iOS 26 beta so far. • Xcode versions used for testing: • Xcode 16.0 beta 1 with iOS 26.0 beta 1 • Xcode 16.0 beta 2 with iOS 26.0 beta 2 • Xcode 16.0 beta [latest] with iOS 26.0 beta [latest] So the regression is present from the very first iOS 26 beta through the latest beta. To help with investigation, I will provide a minimal sample project that sets GKLocalPlayer.local.authenticateHandler in viewDidAppear and logs w
Topic:
Graphics & Games
SubTopic:
GameKit
Tags: