PostRepNotifies may not always be called

UE - Networking - May 8, 2018

FObjectReplicator::UpdateUnmappedObjects calls  CallRepNotifies, but does not call PostRepNotifies. Further, the order of CallRepNotifies and PostNetReceive in FObjectReplicator::UpdateUnmappedObje ...

Destructibles are not rendered correctly when fractured if Support Compute Skincache is enabled

UE - Simulation - Physics - Destruction - May 8, 2018

The rendering of the fractured pieces of a destructible is incorrect when Support Compute Skincache is enabled. The physics of the fractured mesh simulates correctly but the pieces do not render pro ...

iPadPro2 Splash Screen distortion on app Launch

UE - Platform - Mobile - May 7, 2018

iPadPro2 splash screen distorted on app launch. Looks like there is a fix for this in FN branch that can be brought over. Engine/Source/Runtime/ApplicationCore/Private/IOS/IOSAppDelegate.cpp http ...

UMaterialBillboardComponent Memory Leak and Hitching (Unreal 4.19.2 + 4.19.1)

UE - Graphics Features - May 4, 2018

Creating an actor with a UMaterialBillboardComponent causes Editor hitching. ...

Memory Leak when Debugging Blueprint

UE - Rendering Architecture - RHI - May 2, 2018

RAM usage continually increases when debugger is active https://answers.unrealengine.com/questions/784443/ue-4191-memory-leak-while-using-blueprint-debugger.html ...

GetVoiceData() uninitializes VoiceCapture and returns no data

UE - Audio - Apr 27, 2018

Using GetVoiceData causes VoiceCapture to become uninitialized and it is currently not possible to get voice data this way. Regression?: Yes This did not occur in 4.18 This occurs in 4.19 ...

Behavior Tree corrupts as REINST after PIE when using Blueprint Compilation Manager

UE - Gameplay - Blueprint Compiler - Apr 24, 2018

When Blueprint Compilation Manager is enabled, behavior tree node can get corrupted as REINST.  ...

Linux servers cannot start on machines with less than 2G of RAM

UE - Platform - Linux - Apr 23, 2018

The are reports on AnswerHub that servers don't start on machines with low memory. This is caused by an inflexible set up of OS allocation pools on Linux that demands at least 2GB (or close) of RAM ...

r.Shadow.RadiusThreshold and r.Shadow.FadeResolution not affected by Scalability Settings

UE - Graphics Features - Apr 20, 2018

r.Shadow.FadeResolution and r.Shadow.RadiusThreshold values in DefaultScalability.ini are not being applied ...