Redacted crashes on iOS 13.4 Beta

I have started seeing a high number of crashes in Crashlytics that I can't diagnose. Seems to be a memory issue because the crashes comes up as:


Crashed: com.apple.root.default-qos

EXC_BREAKPOINT


However, the trace is entirely redacted:


0 libxpc.dylib <redacted> + 88

1 (Missing)

2 (Missing)

3 (Missing)

4 (Missing)

5 (Missing)

6 (Missing)

7 (Missing)

8 libdispatch.dylib <redacted> + 32

9 (Missing)

10 (Missing)

11 (Missing)

12 (Missing)

13 (Missing)

14 (Missing)


The only silver lining is the issue is limited exclusively to iOS 13.4, so hopefully it's just a beta bug. But I have no idea how to proceed. Help!


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Might be worth adding that I've been struggling with issues with the mediaplayer framework. There have been issues for a long time with MPMusicPlayerController not returning values (nowPlayingItem etc.), or doing so after a terrible lag that locks up the main thread. So I've been making these calls in an asynchronous block and then switching back to the main thread to update the UI. This at least keeps the app responsive.


Probably these are related, but again, this approach has been working through iOS 13.3.x and the issues are in iOS 13.4...

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