Crashlytics Messages in ANR reports

[obitodarky]

I have been facing a high ANR rate mostly on Android 11 devices. In the ANR report, I see a lot of them mentioning Crashlytics.

"Crashlytics Exception Handler1" prio=5 tid=18 Waiting

  at sun.misc.Unsafe.park (Native method)
  at java.util.concurrent.locks.LockSupport.park (LockSupport.java:190)
  at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await (AbstractQueuedSynchronizer.java:2067)
  at java.util.concurrent.LinkedBlockingQueue.take (LinkedBlockingQueue.java:442)
  at java.util.concurrent.ThreadPoolExecutor.getTask (ThreadPoolExecutor.java:1092)
  at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1152)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:641)
  at com.google.firebase.crashlytics.d.h.L$a.a (ExecutorUtils.java:1)
  at com.google.firebase.crashlytics.d.h.d.run (BackgroundPriorityRunnable.java:2)
  at java.lang.Thread.run (Thread.java:923)

There are a bunch more like these.

"com.google.firebase.crashlytics.startup1" prio=5 tid=19 Waiting

  at sun.misc.Unsafe.park (Native method)
  at java.util.concurrent.locks.LockSupport.park (LockSupport.java:190)
  at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await (AbstractQueuedSynchronizer.java:2067)
  at java.util.concurrent.LinkedBlockingQueue.take (LinkedBlockingQueue.java:442)
  at java.util.concurrent.ThreadPoolExecutor.getTask (ThreadPoolExecutor.java:1092)
  at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1152)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:641)
  at com.google.firebase.crashlytics.d.h.L$a.a (ExecutorUtils.java:1)
  at com.google.firebase.crashlytics.d.h.d.run (BackgroundPriorityRunnable.java:2)
  at java.lang.Thread.run (Thread.java:923)

However, I'm not sure if there's something wrong that I have done in the app or what might be causing this issue. The ANR rate is high mostly in android 11 devices, that too, a lot of them running Oppo OS, Oxygen OS, MIUI, basically mostly manufacturers from China. I am not able to reproduce this on my device which is a Pixel 4a.

Any help is appreciated, thanks!