Lumen temporal flicker after leaving Editor open for 3+ days

UE - Graphics Features - Lumen - Nov 18, 2024

Lumen GI has temporal flickering/noise after running the Editor for 3+ days. ...

BakedSourceTexture missing from Sprite in packaged game

UE - Gameplay - Paper2D - Nov 15, 2024

The UPaperSprite::BakedSourceTexture will be nullptr in a packaged game if the sprite is not referenced by the UGameInstance.  The attached sample project demonstrates this scenario. ...

Material attribute layers issue with texture sample and VT lookups

UE - Rendering Architecture - Materials - Nov 14, 2024

When using material attribute layers in a material layer setup, there is a potential discrepancy in the number of VT Lookups presented in the material instance's Platform Stats. When the same textur ...

External Actors can hold stale references to Blueprint classes as edited instance properties

UE - World Creation - Worldbuilding Tools - Nov 14, 2024

When a component is removed from a class that exists as an instance with external actors enabled, a deleted BP component on an actor will remain referenced by the instance. Disabling External Actor ...

Editor preview window for CurveLinearColorAtlas does not automatically update when their CurveLinearColor asset is changed

UE - Graphics Features - Nov 12, 2024

When the CurveLinearColor asset assigned to a CurveLinearColorAtlas is edited (e.g. change the colors of the gradient), the preview window of CurveLinearColorAtlas editor does not automatically upda ...

Skeletal Mesh Customizable Object Node does not warn of changes to mesh sections.

UE - Anim - Mutable - Nov 12, 2024

When reimporting meshes with changes to their material sections, specifically additions, there is no indication that there will be an issue on output of a generated mesh. Ideally, we can watch for a ...

Modeling Mode Vertex Paint Color values are incorrect

UE - Content Tools - Nov 12, 2024

There is a mismatch in between the input and output value of vertex colors painted using the "Modeling Mode" vertex painting tool. The example in the licensee's case is that if they wanted a 0.25f v ...

LoadMapMisc LLM category contains Static Mesh allocations

UE - Rendering Architecture - Nov 12, 2024

UInstancedStaticMeshComponent::CreateSceneProxy() is missing a LLM_SCOPE(ELLMTag::InstancedMesh);  and during level loading allocations for it appear in LoadMapMisc instead of InstancedMesh. Addi ...

After changing SupportedAgent settings, old Recast nav mesh actor is not deleted when saving map with External Actors (OFPA) enabled

UE - AI - Navigation - Nov 8, 2024

Context Recast lets you configure multiple agent types in Project Settings > Navigation System > Supported Agents. When agents have unique settings such as agent radius, building a nav mesh results ...

External objects added through customization have incorrect behaviour with EditConditionHides

UE - Editor - Workflow Systems - Nov 7, 2024

Copy-paste the TestCode.h and TestCode.cpp into a module Activate the customization in the StartupModule() function ``` FPropertyEditorModule& PropertyModule = FModuleManager::LoadModuleChecked<FPro ...