Xcode latest-stable now resolves to Xcode 26.3 RC — breaks all iOS/tvOS builds #485
Description
Description
All iOS and tvOS build jobs (TestFlight iOS, TestFlight tvOS, iOS simulator, tvOS simulator) are failing with exit code 65 since the Xcode version was changed from a pinned 16.4 to latest-stable in commit d8254f3 (Oct 21, 2025).
At the time of that change, latest-stable likely still resolved to a compatible Xcode version on GitHub runners. However, as of February 2026, it resolves to Xcode 26.3 Release Candidate (/Applications/Xcode_26.3_Release_Candidate.app), which is incompatible with the current Expo SDK 52 / React Native 0.76 toolchain.
Affected workflows
build_ios_simulator_app.ymlbuild_tvos_simulator_app.ymltestflight.yml
How to reproduce
Trigger a build from any downstream branded app repo (e.g. cust-app-xrtube). All iOS/tvOS jobs fail during the xcodebuild step.
Additional context
The TestFlight jobs have a compounding issue: the iOS Distribution provisioning profile expired on Nov 25, 2025, so those will also need renewed certificates/profiles in the downstream repo secrets. But the underlying Xcode incompatibility affects all iOS/tvOS jobs including the simulator builds which don't require signing.
Suggested fix
Pin the Xcode version back to a known compatible version (e.g. 16.4) in the maxim-lobanov/setup-xcode step across the three affected workflow files, or use a specific stable version rather than latest-stable to avoid future surprise breakage.