Description

This is a regression and does not occur on Windows

Steps to Reproduce
  1. Launch QAGame with -game argument
  2. Hit ~ and enter Open QA-promotion
  3. Switch to the Automatic Projectile Gun by scrolling
  4. Start shooting while moving towards the rotating decal on the floor

Result: Audio becomes distorted before eventually crashing

Callstack
UE4Editor-Core.dylib!rml::internal::Block::freePublicObject() 
UE4Editor-Core.dylib!FMemory::Free() 
UE4Editor-CoreAudio.dylib!FCoreAudioSoundSource::SubmitPCMBuffers() 
UE4Editor-CoreAudio.dylib!FCoreAudioSoundSource::Init() 
UE4Editor-Engine.dylib!FAudioDevice::StartSources() 
UE4Editor-Engine.dylib!FAudioDevice::Update() 
UE4Editor-Engine.dylib!TGraphTask<FFunctionGraphTask>::ExecuteTask() 
UE4Editor-Core.dylib!FNamedTaskThread::ProcessTasksNamedThread() 
UE4Editor-Core.dylib!FNamedTaskThread::ProcessTasksUntilQuit() 
UE4Editor-Core.dylib!FTaskGraphImplementation::ProcessThreadUntilRequestReturn() 
UE4Editor-Engine.dylib!FAudioThread::Run() 
UE4Editor-Core.dylib!FRunnableThreadPThread::Run() 
UE4Editor-Core.dylib!FRunnableThreadPThread::_ThreadProc() 
libsystem_pthread.dylib!<Unknown> 
libsystem_pthread.dylib!<Unknown> 
libsystem_pthread.dylib!<Unknown> 

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Fixed
ComponentPlatform - Mac
Affects Versions4.15
Target Fix4.15
Fix Commit3273602
Main Commit3389599
Release Commit3273602
CreatedJan 26, 2017
ResolvedJan 26, 2017
UpdatedApr 27, 2018