Audio: Spatialization: Set Allow Spatialization BP command is not functioning

UE - Audio - Oct 1, 2018

Reported via AnswerHub on 4.19 and confirmed in Dev-Audio, the Set Allow Spatialization widget in BP appears to not be functioning - as the audio does not become spatialized in playback. ...

UK2Node_EnumLiteral always outputs defaulted (0) value if input pin is connected

UE - Gameplay - Blueprint - Sep 28, 2018

The reported behavior repros in 4.20 and 4.21, but does not repro in 4.19. Regarding the "Literal Enum" node in blueprints: When an input enum value is connected to the input pin, the output is al ...

MSAA Causes Black Outline with Atmospheric Fog in Forward Shading

UE - Graphics Features - Sep 28, 2018

MSAA causes black aliased outline with Atmospheric Fog with Forward Shading enabled. This does not occur with TAA or FXAA. Also does not occur if there is a sky sphere present. Found in 4.19 CL# 40 ...

Resizing the Editor window causes flicker effect

Tools - Sep 21, 2018

Resizing the Editor from 3 out of the 4 corners causes a flicker effect on the Editor window. The bottom right corner works normally but the other corners causes flickering. Link to video example:  ...

Blueprint Static Meshes lose Vertex color information in Standalone/Release

UE - LD & Modeling - Modeling Tools - Mesh Editing - Sep 21, 2018

In the editor, vertex information can be painted on static meshes that are part of a blueprint. When testing by playing in “Selected Viewport” the painted vertex information is correctly saved and d ...

CharacterMovementComponent causes the Character to slide when jumping on moving objects

UE - Gameplay - Player Movement - Sep 21, 2018

When the CharacterMovementComponent makes the transition from falling to walking, it retains the forward velocity it had while falling. When the character lands on the moving object, its new velocit ...

Instance UObjects in an array on an Actor replaced by pointers to other objects in array while PIE

UE - Gameplay - Blueprint Runtime - Sep 20, 2018

When this issue occurs printing out the addresses of each item in the array shows that elements 2 and 3 have the same address, so for some reason the second element's value is being overridden by th ...

Inconsistent Red X icons when using World Composition

UE - World Creation - Worldbuilding Tools - World Composition - Sep 20, 2018

This issue takes a few attempts to repro. Sometimes when saving the icons will remain normal, but other times a red X will be displayed instead. Opening up the Level that is displaying the X and re= ...

IsTraceHandleValid with default FTraceHandles has unexpected behavior on the first frame

UE - Simulation - Physics - Sep 18, 2018

Because both FWorldAsyncTraceState's CurrentFrame and FTraceHandle are default initialized to 0, on the first frame, if a new Asnc Trace starts all default FTraceHandles will reference the same (now ...

Anim Notify blueprints are included in packages when not referenced

UE - Foundation - Core - Cooker - Sep 17, 2018

Anim Notify Blueprints are included in Packaged builds of the editor even if they are not referenced. This does not occur with other Blueprint classes, such as Actor, although it may with some other ...