When I use Xcode 26 (0.1, 1) for debugging and hit a breakpoint, using "step over" causes the debugger to freeze at a random line of code. Clicking "Pause program execution" indicates that the line is being executed, but the breakpoint never exits, seemingly causing a freeze. The application on the simulator also becomes unresponsive. However, when I do not use breakpoints, my program runs smoothly, and debugging on a physical device does not cause any freezes. This issue only occurs with the simulator. I am using Xcode on Apple Silicon, and due to some third-party SDKs that depend on Rosetta, our app can only run on the Rosetta simulator. We did not encounter this issue when using Xcode 16.x for simulator debugging. The current situation with Xcode 26.x significantly reduces our development efficiency. What could be causing this, and is there a solution?
Xcode 26.x Frequently Freezes During Breakpoint Debugging with Simulator
Universal Simulator
our app can only run on the Rosetta simulator
I want to make a couple of things clear:
- This isn’t a supported configuration. Honestly, I’ve always been surprised that this works at all.
- Apple has announce a timeline for the removal of general support for Rosetta. For the details, see the Important box at the top of About the Rosetta translation environment.
I encourage you to work with your third-party SDK vendor to resolve this roadblock sooner rather than later.
As to your immediate issue, if you create a small test project and run it natively in simulator, does it have the same problem?
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—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"