"Reply already submitted" errors whenever using platform views on Android. #33866
Description
This regressed in flutter/engine#7847 fix is up for review in flutter/engine#9185.
Whenever platform views are used on Android that exception is logged(Android's Log.e):
06-04 12:01:05.997 11978 11978 E DartMessenger: Uncaught exception in binary message listener
06-04 12:01:05.997 11978 11978 E DartMessenger: java.lang.IllegalStateException: Reply already submitted
06-04 12:01:05.997 11978 11978 E DartMessenger: at io.flutter.embedding.engine.dart.DartMessenger$Reply.reply(DartMessenger.java:126)
06-04 12:01:05.997 11978 11978 E DartMessenger: at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:240)
06-04 12:01:05.997 11978 11978 E DartMessenger: at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:90)
06-04 12:01:05.997 11978 11978 E DartMessenger: at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:234)
06-04 12:01:05.997 11978 11978 E DartMessenger: at android.os.MessageQueue.nativePollOnce(Native Method)
06-04 12:01:05.997 11978 11978 E DartMessenger: at android.os.MessageQueue.next(MessageQueue.java:325)
06-04 12:01:05.997 11978 11978 E DartMessenger: at android.os.Looper.loop(Looper.java:142)
06-04 12:01:05.997 11978 11978 E DartMessenger: at android.app.ActivityThread.main(ActivityThread.java:6591)
06-04 12:01:05.997 11978 11978 E DartMessenger: at java.lang.reflect.Method.invoke(Native Method)
06-04 12:01:05.997 11978 11978 E DartMessenger: at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
06-04 12:01:05.997 11978 11978 E DartMessenger: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:772)
06-04 12:01:06.002 11978 11978 E MethodChannel#flutter/platform_views: Failed to handle method call
06-04 12:01:06.002 11978 11978 E MethodChannel#flutter/platform_views: java.lang.IllegalStateException: Reply already submitted
06-04 12:01:06.002 11978 11978 E MethodChannel#flutter/platform_views: at io.flutter.embedding.engine.dart.DartMessenger$Reply.reply(DartMessenger.java:126)
06-04 12:01:06.002 11978 11978 E MethodChannel#flutter/platform_views: at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler$1.notImplemented(MethodChannel.java:235)
06-04 12:01:06.002 11978 11978 E MethodChannel#flutter/platform_views: at io.flutter.embedding.engine.systemchannels.PlatformViewsChannel$1.onMethodCall(PlatformViewsChannel.java:55)
06-04 12:01:06.002 11978 11978 E MethodChannel#flutter/platform_views: at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:222)
06-04 12:01:06.002 11978 11978 E MethodChannel#flutter/platform_views: at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:90)
06-04 12:01:06.002 11978 11978 E MethodChannel#flutter/platform_views: at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:234)
06-04 12:01:06.002 11978 11978 E MethodChannel#flutter/platform_views: at android.os.MessageQueue.nativePollOnce(Native Method)
06-04 12:01:06.002 11978 11978 E MethodChannel#flutter/platform_views: at android.os.MessageQueue.next(MessageQueue.java:325)
06-04 12:01:06.002 11978 11978 E MethodChannel#flutter/platform_views: at android.os.Looper.loop(Looper.java:142)
06-04 12:01:06.002 11978 11978 E MethodChannel#flutter/platform_views: at android.app.ActivityThread.main(ActivityThread.java:6591)
06-04 12:01:06.002 11978 11978 E MethodChannel#flutter/platform_views: at java.lang.reflect.Method.invoke(Native Method)
06-04 12:01:06.002 11978 11978 E MethodChannel#flutter/platform_views: at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
06-04 12:01:06.002 11978 11978 E MethodChannel#flutter/platform_views: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:772)