_UIGetCurrentFallbackTraitCollection SIGSEGV

I am seeing call stacks originating from UIKit code crashing in _UIGetCurrentFallbackTraitCollection with a memory issue.

Crash logs are attached. What could this be? My app uses UIAppearance, I suspect this to be related, but I cannot trace the crash logs back to app-specific code.

Post not yet marked as solved Up vote post of datwelk Down vote post of datwelk
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Have you solve this issue ?

  • No. Still occuring in iOS 16.4.1.

  • My hypothesis is that UIAppearance selectors cause this crash when an image constructed with +[UIImage new] is used as the argument value in an appearance selector. I will change this to using a transparent PNG to see if this solves the crash. It will take some time though (maybe 2 months) before users have updated the application.

  • Any luck resolving this issue? I am seeing the same crash spike for my application, and I suspect they are due to app termination memory corruption when users kill the App. So may not have influence for users, are you seeing the same?