Unreal Engine Issues

Lumen scene view - spot light cut off

This looks to be an issue with shadows in Lumen Direct Lighting, and might be coming from the "Batched lights" pass. ...

Nanite Dynamic Tessellation issue with Material Layers

Crash Duplicating an empty AtlasRow material node

This isn't a hard crash, but a "verify(...)" from MaterialExpressions.cpp, line 559. ...

Delete in the content browser might not actually delete the asset on disk if the asset is not up to date in perforce

Details Panel - ShowOnlyInnerProperties does not work in nested structs unless the outer struct also has the metadata

The current implementation for inlining struct members is setup in a way where we start with the outermost struct and only recurse into any child structs if it contains the ShowOnlyInnerProperties m ...

Static Mesh Only enabled Foliage Actor causes serialization error in packaged game

The crash can be worked around by modifying FFoliageISMActor::Serialize as following code : void FFoliageISMActor::Serialize(FArchive& Ar) { #if WITH_EDITORONLY_DATA     if (!Ar.IsCooking()) // ...

Actors unrelated to the changelist being validated cause errors

When validating a changelist, unrelated errors to the changelist can appear. Here's an example of running the validation on a cl named "temp cl" which just contains a single actor "Cylinder". The A ...

In-editor hitch when deleting one actor in a world with many loaded actors

When editing a level with many actors (1000+), deleting an actor results in a noticeable hitch: the editor becomes unresponsive for seconds. This hitch becomes longer the more actors are loaded and ...

GroupActor has incorrect streaming bounds when created in level instances

Material previews in the content browser display the default material checkerboard

Occasionally material and material functions previews in the content browser are displayed with the default material checkerboard, perhaps due to shaders not being compiled. UDN users are also expe ...