Unreal Engine Issues

Creating a new C++ class derived from Instance Foliage Actor fails to link

This is not a regression. Tested in //UE4/Release-4.27 CL 18319896 Creating a new C++ class derived from Instance Foliage Actor fails to compile. User reported this issue after they tried to includ ...

Invalid Subsurface Scattering Color when using Per Pixel Shading Model and non-default material layers

It appears as though when adding material layers to a material instance that uses the FromExpression shading model, the subsurface color ends up white. If you add a DebugFloat3Values and output it t ...

Niagara Mesh Renderer causes GPU hang on IOS 13.4.1

BaseColor of SubSurfaceProfile cannot be obtained when using GBuffer in Niagara.

CommonUI Module Loading Ensure

Generated from CrashReporter ...

[CrashReport]UnrealEditor-DatasmithImporter!FDatasmithImporterHelper::ImportInternal(UFactory *) [DatasmithImporterHelper.cpp:218]

Generated from CrashReporter ...

Changes to AActor::SetReplicates caused Role/RemoteRole replication fix to regress

There was a recent bug report that matched the description of some older cases (see linked UDN). The issue raised in those cases, [Link Removed], had been fixed, but the recent question seemed to in ...

Lumen appears to ignore custom World Origin Location

Lumen doesn't update when the World Origin Location is changed. ...

Some Niagara Fluid systems render black with 'Extend default luminance range in Auto Exposure settings' enabled with SunSky

Some Niagara Fluid systems render black with 'Extend default luminance range in Auto Exposure settings' enabled with a SunSky in the level. ...

SK: The build code do not look at the alternate skin to do the welding

We need to investigate if we want this behavior or not, if we do not weld the base lod vertices, maybe we will have bad mesh behavior when not using the alternate skinning. The consequence of this n ...