Hello,
currently I am having trouble releasing an app because it crashes/does not launch on iOS 26.0.1. We have uploaded apps in the past so I tried building one of them with our current toolchain. I use Xcode 16.4, Kotlin version 2.0.0, LibGDX 1.13.1 and robovm/MobiVM 2.3.23. I uploaded the build to TestFlight and tested with physical devices running iOS 18.5 and 26.0.1. It runs fine on 18.5 but refuses to launch on the 26.0.1 device. I cannot retrieve a crash log or .ips file because none is written. When I write a Console log while the app crashes/does not launch I get no hints as to why it does so. Do you maybe have additional ideas as to why it keeps not launching on iOS 26.0.1?
It’s hard to offer specific insight into this because I don’t maintain expertise in third-party tooling. I usually recommend that folks in your situation ask for help via the support channel for the tools they’re using. However, I can offer some general advice.
My experience is that, when an app fails to launch like this, without generating a crash report, it’s usually because the third-party runtime has detected a problem and called exit. That’s fine during debugging, because you can get a breakpoint on exit and look at the backtrace. However, it’s problematic when the app is Distribution signed, because you can’t attach with the debugger.
My usual advice here is to use Xcode to export a Development signed app from the same Xcode archive that you submitted to TestFlight. See Isolating Code Signing Problems from Build Problems. I’m not sure how well that’ll map to your third-party tooling.
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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
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