Unreal Engine Issues

Volumetric Fog causing light to get darker after each lighting build

With dense volumetric fog enabled it will cause the lighting to get darker each build you do. ...

Packaging fails with too many instanced static meshes

Project will fail to package with more than one actor containing ISM Components. From user: "...After some testing I found that it only occurs if there are multiple actors in a map (either of the ...

Datasmith Max import- Datasmith reimport Material option missing after reopening UE4

SunTemple crash on load on some iOS devices

This does not occur when attempting to repro using a template code project; testing on the same device. This crash occurred on an iPhone 6, v11.4 (A8) It did not occur on an iPhone X, v11.4 (A11 B ...

Directional Light settings remain from previous level when creating new level when using forward rendering

Using Forward rendering, directional light settings persist across levels and after deletion. Video attached, shows problem in Dev-VR but same issue occurs in Release-4.20 ...

Cannot access properties of the FAppleARKitFrame struct from within a Blueprint

It is not possible to access properties of the {FAppleARKitFrame}} struct within a Blueprint. The struct itself is exposed as a BlueprintType, but none of its properties are also exposed. ...

Crash Occurs When Importing a .ABC File as Skeletal Mesh Into Project That Already Contains Asset's Materials

Editor crashes when importing an .abc file as a skeletal mesh and the assets materials already exist inside the project. -Materials need exist inside project before import -If the .abc file is imp ...

[CrashReport] UE4Editor_Renderer!FMaterialShader::SetParametersInner<FRHIVertexShader * __ptr64>() [shaderbaseclasses.cpp:181]

No user comments in crash group 177 ERHIFeatureLevel::Type FeatureLevel = View.GetFeatureLevel(); 178 check(Material.GetRenderingThreadShaderMap() && Material.GetRenderingThreadSha ...

Warnings Log spam when pasting a widget into any panel widget

An increasing amount of warning show up in the output log as a widget is pasted into a name space that is part of a widget that has been added to another widget via the user created section. Examp ...

Reimported mesh doesn't remove unused material slot

Only once operation of Reimport could provide correct updated material slots ...