Particle Mesh Emitters Cause Heavy FPS Stutter

UE - Graphics Features - May 4, 2018

Per User: After updating my project from 4.18 to 4.19, I started getting huge FPS drops at regular intervals. I managed to trace back the issue to particle systems with mesh emitters and could repr ...

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 ...

iPhonePackager.exe is not included when a local binary build of the Engine is created on a Mac

UE - Foundation - Build - Rocket (Installed Engine) - May 1, 2018

When a local binary build of the Engine is created on a Mac, the iPhonePackager is not copied over into the new local binary build. This prevents iOS certs and provisions from being imported into pr ...

Crash when calling an event with an enum reference parameter with literal

UE - Platform - Linux - May 1, 2018

The issue appears to be the type of the input pin on the custom event(or function - both behave the same), under normal circumstances it should allow you to pick the enum from a list on the calling ...

Duplicating Interface functions causes the Input/Output values to duplicate twice

UE - Gameplay - Apr 27, 2018

When duplicating an Interface function, the values for Input/Output are doubled or tripled. ...

Allow having TArray with index size using 64 bits instead of 32 bits

UE - Foundation - Core - Apr 27, 2018

With the geometry data getting bigger and bigger we hit more often the int32 limits of the default TArray. All geometry data is store in array so we cannot have more then 2GB of vertexinstances or t ...

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 ...

FMovieSceneTrackCompilerArgs :: DefaultCompletionMode Becomes Undefined Value Using Add New Camera and CameraCut Button of Sequencer

UE - Anim - Sequencer - Apr 27, 2018

FMovieSceneTrackCompilerArgs::DefaultCompletionMode is undefined value in UMovieSceneTrack::Compile if using add new camera and cameracut button of sequencer. When creating another track, processin ...