Sunday February 11th 2024, 13:35 - Monday February 12th 2024, 09:00 UTC
Over the course of the incident, iOS 17 device availability decreased until all devices were unavailable.
A change in behavior in Xcode resulted in non-exiting child processes that eventually caused the app to become unresponsive.
Child processes were reaped across the service’s fleet.
We are working to improve the reliability of services involved in managing iOS 17 real devices.