UE4 Integration has crash in packaged game

Question

In using AkEvent without AkComponent in seqeuncer, Travelling other level with cancelling Event occures game crash in packaged game.

Because PostEvent with DUMMY_GAMEOBJ have not registered to the CallbackManager, CancelEventCallbackCookie in SectionBeingDestroyed is ignored. 
*see FAkAudioDevice::PostEvent

I fixed this issue with following code.

*** Wwise/Source/AkAudio/Private/AkAudioDevice.cpp
***************
*** 1125,1130 ****
--- 1125,1157 ----
  return PostEvent(in_pEvent->GetName(), in_pActor, in_uFlags, in_pfnCallback, in_pCookie, in_bStopWhenOwnerDestroyed);
  }
 
+ //---------- begin code ------------- 
+ template<typename FCreateCallbackPackage>
+ AkPlayingID FAkAudioDevice::PostEvent(
+ const FString& in_EventName,
+ AkGameObjectID gameObjID,
+ FCreateCallbackPackage CreateCallbackPackage
+ )
+ {
+ AkPlayingID playingID = AK_INVALID_PLAYING_ID;
+ 
+ if (m_bSoundEngineInitialized && CallbackManager)
+ {
+ auto pPackage = CreateCallbackPackage(gameObjID);
+ if (pPackage)
+ {
+ playingID = AK::SoundEngine::PostEvent(TCHAR_TO_AK(*in_EventName), gameObjID, pPackage->uUserFlags | AK_EndOfEvent, &FAkComponentCallbackManager::AkComponentCallback, pPackage);
+ if (playingID == AK_INVALID_PLAYING_ID)
+ {
+ CallbackManager->RemoveCallbackPackage(pPackage, gameObjID);
+ }
+ }
+ }
+ 
+ return playingID;
+ }
+ //---------- end code ------------- 
+ 
  /**
   * Post an event to ak soundengine by name
   *
***************
*** 1150,1156 ****
--- 1177,1189 ----
  if (!in_pActor)
  {
  // PostEvent must be bound to a game object. Passing DUMMY_GAMEOBJ as default game object.
+ #if 1 
+ return PostEvent(in_EventName, DUMMY_GAMEOBJ, [in_pfnCallback, in_pCookie, in_uFlags, this](AkGameObjectID gameObjID) {
+ return CallbackManager->CreateCallbackPackage(in_pfnCallback, in_pCookie, in_uFlags, gameObjID);
+ });
+ #else
  return AK::SoundEngine::PostEvent(TCHAR_TO_AK(*in_EventName), DUMMY_GAMEOBJ, in_uFlags, in_pfnCallback, in_pCookie);
+ #endif
  }
  else if (!in_pActor->IsActorBeingDestroyed() && !in_pActor->IsPendingKill())
  {
*** Wwise/Source/AkAudio/Public/AkAudioDevice.h
***************
*** 1225,1230 ****
--- 1225,1239 ----
      FCreateCallbackPackage CreateCallbackPackage
    );
 
+ //----------------BEGIN CODE
+   template<typename FCreateCallbackPackage>
+   AkPlayingID PostEvent(
+     const FString& in_EventName,
+     AkGameObjectID gameObjID,
+     FCreateCallbackPackage CreateCallbackPackage
+   );
+ 
+ //----------------END CODE
 
    // Overload allowing to modify StopWhenOwnerDestroyed after getting the AkComponent
    AKRESULT GetGameObjectID(AActor * in_pActor, AkGameObjectID& io_GameObject, bool in_bStopWhenOwnerDestroyed );