Admob Causing ANR when closing Ads

[REQUIRED] Step 1: Describe your environment

• Unity version: 2019.4.30f1
• Google Mobile Ads Unity plugin version: 6.1.2
• Platform: _____ Android
• Platform OS version: _____ ( Android 11 )
• Any specific devices issue occurs on: _____
• Mediation ad networks used, and their versions: IronSrc(v7.1.8.0), Facebook(v6.5.1.1), Unity(v3.7.5.0), InMobi (9.2.0.0)

[REQUIRED] Step 2: Describe the problem

We are getting a Random ANR at firebase crashlytics and we are not able to repro it.

#### Root Blocking

Binder:18236_F (native): tid=6 systid=29723
#00 pc 0x9c7c8 libc.so 
#01 pc 0x5a87c libc.so 
#02 pc 0x7c55c base.apk!libconscrypt_gmscore_jni.so 
#03 pc 0x7ca00 base.apk!libconscrypt_gmscore_jni.so 
#04 pc 0x75464 base.apk!libconscrypt_gmscore_jni.so 
       at com.google.android.gms.org.conscrypt.NativeCrypto.SSL_read(Native method)
       at com.google.android.gms.org.conscrypt.NativeSsl.read(:com.google.android.gms@214815039@21.48.15 (150408-414534850):3)
       at com.google.android.gms.org.conscrypt.ConscryptFileDescriptorSocket$SSLInputStream.read(:com.google.android.gms@214815039@21.48.15 (150408-414534850):6)
       at com.android.okhttp.okio.Okio$2.read(Okio.java:138)
       at com.android.okhttp.okio.AsyncTimeout$2.read(AsyncTimeout.java:213)
       at com.android.okhttp.okio.RealBufferedSource.read(RealBufferedSource.java:51)
       at com.android.okhttp.internal.http.Http1xStream$FixedLengthSource.read(Http1xStream.java:395)
       at com.android.okhttp.okio.RealBufferedSource$1.read(RealBufferedSource.java:372)
       at java.io.BufferedInputStream.read1(BufferedInputStream.java:286)
       at java.io.BufferedInputStream.read(BufferedInputStream.java:347)
       at android.media.MediaHTTPConnection.readAt(MediaHTTPConnection.java:404)
       at android.media.MediaHTTPConnection.native_readAt(Native method)
       at android.media.MediaHTTPConnection.readAt(MediaHTTPConnection.java:390)
       at android.media.IMediaHTTPConnection$Stub.onTransact(IMediaHTTPConnection.java:143)
       at android.os.Binder.execTransactInternal(Binder.java:1174)
       at android.os.Binder.execTransact(Binder.java:1126)

#### Triggered ANR: -

main (unknown): tid=1 systid=18236
       at android.media.MediaHTTPConnection.disconnect(MediaHTTPConnection.java:172)
       at android.media.IMediaHTTPConnection$Stub.onTransact(IMediaHTTPConnection.java:132)
       at android.os.Binder.execTransactInternal(Binder.java:1174)
       at android.os.Binder.execTransact(Binder.java:1126)
       at android.media.MediaPlayer._release(Native method)
       at android.media.MediaPlayer.release(MediaPlayer.java:2121)
       at android.widget.VideoView.stopPlayback(VideoView.java:365)
       at com.unity3d.services.ads.adunit.VideoPlayerHandler.destroy(VideoPlayerHandler.java:38)
       at com.unity3d.services.ads.adunit.VideoPlayerHandler.onPause(VideoPlayerHandler.java:74)
       at com.unity3d.services.ads.adunit.AdUnitActivity.onPause(AdUnitActivity.java:219)
       at android.app.Activity.performPause(Activity.java:8271)
       at android.app.Instrumentation.callActivityOnPause(Instrumentation.java:1510)
       at android.app.ActivityThread.performPauseActivityIfNeeded(ActivityThread.java:5039)
       at android.app.ActivityThread.performPauseActivity(ActivityThread.java:5000)
       at android.app.ActivityThread.handlePauseActivity(ActivityThread.java:4951)
       at android.app.servertransaction.PauseActivityItem.execute(PauseActivityItem.java:46)
       at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:176)
       at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97)
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2207)
       at android.os.Handler.dispatchMessage(Handler.java:106)
       at android.os.Looper.loop(Looper.java:268)
       at android.app.ActivityThread.main(ActivityThread.java:8067)
       at java.lang.reflect.Method.invoke(Native method)
       at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:627)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:997)

Steps to reproduce:

Unable to Repro.

More Info :- We are getting strict policy violation at Google play. Well Can this okhttp version be the cause ?

com.squareup.okhttp3:okhttp:3.12.1   from dependency Graph

StrictMode policy violation: android.os.strictmode.NonSdkApiUsedViolation: Lcom/android/org/conscrypt/ConscryptEngineSocket;->setHostname(Ljava/lang/String;)V
	at android.os.StrictMode.lambda$static$1(StrictMode.java:416)
	at android.os.-$$Lambda$StrictMode$lu9ekkHJ2HMz0jd3F8K8MnhenxQ.accept(Unknown Source:2)
	at java.lang.Class.getDeclaredMethodInternal(Native Method)
	at java.lang.Class.getPublicMethodRecursive(Class.java:2079)
	at java.lang.Class.getMethod(Class.java:2066)
	at java.lang.Class.getMethod(Class.java:1693)
	at okhttp3.internal.platform.OptionalMethod.getPublicMethod(OptionalMethod.java:164)
	at okhttp3.internal.platform.OptionalMethod.getMethod(OptionalMethod.java:149)
	at okhttp3.internal.platform.OptionalMethod.invokeOptional(OptionalMethod.java:66)
	at okhttp3.internal.platform.OptionalMethod.invokeOptionalWithoutCheckedException(OptionalMethod.java:86)
	at okhttp3.internal.platform.AndroidPlatform.configureTlsExtensions(AndroidPlatform.java:123)
	at okhttp3.internal.connection.RealConnection.connectTls(RealConnection.java:314)
	at okhttp3.internal.connection.RealConnection.establishProtocol(RealConnection.java:283)
	at okhttp3.internal.connection.RealConnection.connect(RealConnection.java:168)
	at okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:257)
	at okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:135)
	at okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:114)
	at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
	at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
	at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
	at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:126)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
	at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:254)
	at okhttp3.RealCall$AsyncCall.execute(RealCall.java:200)
	at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
	at java.lang.Thread.run(Thread.java:923)

StrictMode policy violation: android.os.strictmode.NonSdkApiUsedViolation: Ljava/net/Socket;->impl:Ljava/net/SocketImpl;
	at android.os.StrictMode.lambda$static$1(StrictMode.java:416)
	at android.os.-$$Lambda$StrictMode$lu9ekkHJ2HMz0jd3F8K8MnhenxQ.accept(Unknown Source:2)
	at java.lang.Class.getDeclaredField(Native Method)
	at com.google.android.gms.org.conscrypt.Platform.getFileDescriptor(:com.google.android.gms@213918046@21.39.18 (150400-407637301):1)
	at com.google.android.gms.org.conscrypt.ConscryptFileDescriptorSocket$SSLInputStream.read(:com.google.android.gms@213918046@21.39.18 (150400-407637301):6)
	at com.android.okhttp.okio.Okio$2.read(Okio.java:138)
	at com.android.okhttp.okio.AsyncTimeout$2.read(AsyncTimeout.java:213)
	at com.android.okhttp.okio.RealBufferedSource.exhausted(RealBufferedSource.java:61)
	at com.android.okhttp.internal.io.RealConnection.isHealthy(RealConnection.java:365)
	at com.android.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:139)
	at com.android.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:97)
	at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:289)
	at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:232)
	at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:465)
	at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:131)
	at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:262)
	at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.getOutputStream(DelegatingHttpsURLConnection.java:219)
	at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:30)
	at com.google.android.gms.internal.firebase-auth-api.zzvb.zza(com.google.firebase:firebase-auth@@21.0.1:10)
	at com.google.android.gms.internal.firebase-auth-api.zzul.zzg(com.google.firebase:firebase-auth@@21.0.1:4)
	at com.google.android.gms.internal.firebase-auth-api.zzpt.zzO(com.google.firebase:firebase-auth@@21.0.1:5)
	at com.google.android.gms.internal.firebase-auth-api.zzpt.zzb(com.google.firebase:firebase-auth@@21.0.1:1)
	at com.google.android.gms.internal.firebase-auth-api.zzpn.zzb(com.google.firebase:firebase-auth@@21.0.1:7)
	at com.google.android.gms.internal.firebase-auth-api.zzvb.zza(com.google.firebase:firebase-auth@@21.0.1:25)
	at com.google.android.gms.internal.firebase-auth-api.zzul.zzn(com.google.firebase:firebase-auth@@21.0.1:4)
	at com.google.android.gms.internal.firebase-auth-api.zzpt.zzz(com.google.firebase:firebase-auth@@21.0.1:3)
	at com.google.android.gms.internal.firebase-auth-api.zztp.zzu(com.google.firebase:firebase-auth@@21.0.1:4)
	at com.google.android.gms.internal.firebase-auth-api.zzrz.zzd(com.google.firebase:firebase-auth@@21.0.1:3)
	at com.google.android.gms.internal.firebase-auth-api.zzry.accept(Unknown Source:6)
	at com.google.android.gms.common.api.internal.zacr.doExecute(com.google.android.gms:play-services-base@@17.6.0:1)
	at com.google.android.gms.common.api.internal.zag.zaf(com.google.android.gms:play-services-base@@17.6.0:1)
	at com.google.android.gms.common.api.internal.zabl.zaG(com.google.android.gms:play-services-base@@17.6.0:2)
	at com.google.android.gms.common.api.internal.zabl.zaF(com.google.android.gms:play-services-base@@17.6.0:5)
	at com.google.android.gms.common.api.internal.zabl.zad(com.google.android.gms:play-services-base@@17.6.0:3)
	at com.google.android.gms.common.api.internal.GoogleApiManager.handleMessage(com.google.android.gms:play-services-base@@17.6.0:64)
	at android.os.Handler.dispatchMessage(Handler.java:102)
	at android.os.Looper.loop(Looper.java:223)
	at android.os.HandlerThread.run(HandlerThread.java:67)

[KarahanOnarlar]

For those who are considering changing the mediation system:

We published our game in October 2021(only with Admob Mediation). By the end of November, our ANR rate exceeded 4%. As a result, our rankings and downloads dropped drastically and we lost our momentum. Because of this, we had to completely abandon Admob. We switched to Ironsource Mediation and our ANR rate dropped below 1% from the first month and below the threshold after the second month. Now our rankings are starting to return to normal and our daily downloads have increased nearly eightfold. However, the ad revenue is about 35% lower than Admob.

We’re happy for now, but it would be great to have the issue resolved and to be able to use Admob again…

[romannotroman]

What is the state of the issue? More than half a year Admob team promises to implement a fix and still no results