Our app used Crashlytics to track app crash. One really weird crash was logged in Crashlytics. It only happened when using ipad mini. I never experienced the issue when testing on iphone 6s and iphone 6s plus.
UIAccessibility _copyMultipleAttributeValuesCallback
The following is crashlytic log screenshot.
Anything prefixed with AX or _AX is most likely a private accessibility class as well as AXRuntime is mose likely an internal framework. This means, unfortunately, that there is probably nothing you can do to fix this crash yourself.
However, filing a bug to Apple might help them resolve the issue. You can file bugs to Apple here and there is a dedicated Accessibility component that you can assign it to. Remember to include the stack trace and any other relevant information.
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