The engine crashes when adding a new brush at newly created level by a specific way.

Tools - MeshEditing - Jun 17, 2019

issuesFBSPOps::csgAddOperation returns null if BuilderBrush has no valid polys.The creating level on content browser never calls "UEditorEngine::InitBuilderBrush(NewWorld);". But "New level" button o ...

Widget component navigation does not work in Standalone

Tools - UMG - Jun 14, 2019

When running a standalone build, focus navigation doesn't work on widgets within a world-space widget component. This may be fallout from UE-62606, which parented the widget component's virtual wind ...

Stationary Spot Lights in Forward Rendering Incorrectly with PerVertex NonDirectional Translucency

Rendering - Features Teams - Jun 14, 2019

Stationary Spot Lights in Forward Rendering cause artifacts when lighting transluceny set to Volumetric PerVertex NonDirectional. When the camera is moved around the object, the lit vertices flicker ...

Using Square Brackets in a Folder Name Works but makes Meshes Unusable.

Tools - Jun 12, 2019

Renaming a folder using square brackets seems to work but renders meshes inside unusable in certain instances.  ...

Sequencer Attach track appears more offset than expected when using override instance data

Sequencer - Jun 12, 2019

When using an attached track in combination with enabling override instance data it appears as though the object used in the attached track is offset more than expected (appears to be by roughly dou ...

CSM has artifacts if shadow distance less than 2000

Rendering - Features Teams - Jun 12, 2019

Random Scene Objects are not being rendered in Raytraced Reflections in packaging builds.

Rendering - Ray Tracing - Jun 11, 2019

Each time the build is run, different assets are missing in the reflections. Found in 4.22 CL# 6574378 and 4.23 CL# 6925347 ...

Particle systems have frame rate dependent simulations when Min Time Between Ticks is set, and ticking is managed

Rendering - Cascade - Jun 11, 2019

Managed ticking when combined with Min Time Between Ticks will cause particle velocity to vary depending on frame rate. ...

Ray Traced Reflections Get Darker The Higher The Rougness Value is for Metallic Materials

Rendering - Ray Tracing - Jun 11, 2019

Instead of reflecting an average color of the surrounding, reflections become black with increased roughness values. Found in 4.22 CL# 6574378 and 4.23 CL# 6925347 ...

Instanced Static Mesh instance with negative scale has black lighting

Rendering - Jun 11, 2019

[Image Removed] The image above was the results after building lighting.The far right spheres all have negative scaling(-1 on Y) and reverse culling checked and are instanced.The middle set of sphe ...