Volumetric Light Fog Leak through objects

UE - Graphics Features - Dec 31, 2018

Any environment with volumetric fog enabled will have a light leak which appears through objects.  Found in 4.20 CL# 4369336, 4.21 CL# 4613538, 4.22 CL# 4666322 ...

Unable to Package Project for Mac with Source Version of UE4

UE - Platform - Apple - Jul 14, 2016

With a project built from Source on a PC, when rebuilt in XCode on the Mac, more than one user is unable to package the project for the Mac with very similar failures in the build logs. (*See attach ...

Vertex Interpolate Node Doesn't Work with Lightmass

UE - Graphics Features - Lumen - Aug 8, 2018

The vertex interpolate node doesn't work with lightmass. Found in 4.19 CL# 4033788, 4.20 CL# 4233996, and 4.21 CL# 4258917 ...

Assertion failed in DX12 RHI after instancing actors

UE - Rendering Architecture - RHI - Mar 8, 2019

It doesn't happen with the DX11 RHI ...

Contact Offset no longer appears to have an effect

UE - Simulation - Physics - Jan 15, 2019

When modifying the contact offset in a project it appears to have no effect. The setting that worked in a previous engine version (4.19) now collide in the same way as the default settings. ...

Sometimes CharacterMovement stops at very low steps (quite lower than Max Step Height).

UE - Gameplay - Player Movement - Jul 11, 2016

Sometimes CharacterMovement stops at very low steps (quite lower than Max Step Height). Capsule radius of Character is 50cm, Max Step Height is 45cm, step heights is around 10~30cm, MaxWalkSpeed is ...

Toggling Vertex Colors on in Static Mesh Editor makes the viewport all white

UE - Gameplay - Aug 4, 2016

When turning on the Vertex Color option in the static mesh editor, the whole viewport turns white. ...

Lighting channels are not supported with tiled lighting

UE - Graphics Features - Aug 15, 2016

Reported via UDN ...

Clearcoat shader disappears if any asset using the Material leaves lighting

UE - Graphics Features - Aug 19, 2015

Clearcoat Shader will stop receiving lighting information if any mesh assigned the material using the shader leaves lighting. Also Reproduced in Launcher 4.9 Preview 4, Main-CL-2660934 [Image Remo ...

OSVR does not consistently render to HMD if OSVR Server is not open prior to opening editor/cooked game

UE - Platform - XR - May 18, 2016

It seems like if OSVR_Server is not launched prior to opening the editor, vr-preview functionality will not work (even though the editor starts OSVR_Server at launch). Seems like server must be open ...