PVehicleDrive not null-ed in UWheeledVehicleMovementComponent::OnDestroyPhysicsState

UE - Simulation - Physics - Apr 30, 2019

PVehicleDrive is not null-ed during OnDestroyPhysicsState, which can lead to crashes during future function calls. ...

Assertion failed after closing project on Oculus Mobile - Referencing AudioMixerSourceManager.cpp:300

UE - Audio - Apr 30, 2019

This assertion seems to occur when closing the project while a sound is playing on the device. Assertion failed: CommandBuffers[NextIndex].SourceCommandQueue.Num() == 0 [File:D:/P4Workspaces/Switch ...

FAnimInstanceProxy::LODLevel isn't initialized, causing UB in PreUpdate

OLD - Anim - Apr 29, 2019

FAnimInstanceProxy::LODLevel isn't initialized before it is used in PreUpdate, causing UB on the first call. ...

DevelopmentServerLauncher.exe loops whenever the editor is open even if no iOS devices are connected

UE - Platform - Mobile - Apr 29, 2019

A user has reported that DeploymentServerLauncher.exe will continue to poll for devices even if no iOS devices are connected. I am under the impression that this is so that Windows can poll for iOS ...

Adding an LOD while in PIE or Simulate Cauases the Editor to Crash

UE - Niagara - Apr 29, 2019

If you add an LOD while the editor is simulating or playing, the Editor Crashes. Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 5660361, 4.23 CL# 6063286 ...

Materials with a custom node with a Struct that has a function fails to compile for GLSL (Android) and uses a default material

UE - Graphics Features - Apr 29, 2019

A user has reported that Materials that contain a custom HLSL node that has a Struct with a function declared inside of it results in the material failing to compile for GLSL, causing the Material t ...

When a Texture Object is used for the "Tex" Input of a Texture Sample node in a material, the material will no longer contribute to indirect lighting when used with Stationary Lights

UE - Graphics Features - Apr 26, 2019

When a Texture Object is used for the "Tex" Input of a Texture Sample node in a material, the material will no longer contribute to indirect lighting when used with static lighting. Working as expe ...

BeginPlay execution order is different when using Game Mode instead of Game Mode Base

UE - Gameplay - Blueprint - Apr 26, 2019

Using Game Mode instead of Game Mode Base causes the Begin Play event to trigger in a different order. This is shown in the reproduction with the Begin Play of the Player Controller and the Game Mod ...

Crash upon opening packaged game when Event Driven Loader is disabled

UE - Foundation - Core - Apr 26, 2019

Packaged games are unable to open when Event Driven Loader is disabled. The error message given is: Assertion failed: !Linker->GetSerializeContext() [File:D:\Build\++UE4\Sync\Engine\Source\Runtime\C ...