Deleting track categories needs to be localized

UE - Anim - Sequencer - Aug 2, 2019

Interpolators of Particle Dynamic Parameters Need "nointerpolation".

UE - Niagara - Aug 1, 2019

Regardless Niagara or Cascade, dynamic parameters for particles are passed to pixel shaders from vertex shaders via InterpolantsVSToPS. It can cause a precision error on some materials, for example ...

Non-public BlueprintCallable function calls do not compile in a nativized Blueprint.

UE - Gameplay - Blueprint - Jun 17, 2019

A nativized Blueprint cannot currently invoke a non-public BlueprintCallable function that's defined in native C++ code without resulting in a C++ compile error. Example: APlayerController::PlayDyn ...

Severe ghosting on animated objects when camera stops moving in sequences when using path tracer

UE - Graphics Features - Lumen - Aug 2, 2019

Pixels seem to stop updating in the path tracer when a camera stops moving in sequence. Old color values from objects that have moved seem to still affect pixels they should not.  ...

FPhysicsInterface_PhysX::LineTrace_Geom fails for welded bodies

UE - Simulation - Physics - Aug 2, 2019

FPhysicsInterface_PhysX::LineTrace_Geom does not properly respond to welded child bodies. ...

ApplicationReceivedScreenOrientationChangedNotificationDelegate does NOT work properly on Android

UE - Platform - Mobile - Aug 5, 2019

ApplicationReceivedScreenOrientationChangedNotificationDelegate supports iOS but not Android. Probably, Java_com_epicgames_ue4_GameActivity_nativeOnConfigurationChanged should be useful for fix thi ...

SteamVR crash with DirectX 12

UE - Platform - XR - Aug 5, 2019

SteamVR will crash with dx12 enabled. You may need to attempt to teleport or open the console for the crash to occur. Also confirmed in MAIN 4.24 CL 7713732 ...

Blueprint Actors do not respect Rotate to Surface Normal Rules; in Editor's Viewport Snapping Options

Tools - Aug 14, 2019

Blueprint Actors do not respect Rotate to Surface Normal Rules; in Editor's Viewport Snapping Options The surface normal rotation handling comes from UActorFactory, and in all the cases where items ...

SetAnimRootMotionTranslationScale Is not exposed to Blueprints

UE - Anim - Gameplay - Aug 5, 2019

The SetAnimRootMotionTranslationScale in Character.h is not callable by blueprints. ...