Nanite Mesh Reduction Issue

UE - Rendering - Features - Nanite - Nov 28, 2024

This issue was reported through a UDN. Licensee mentioned that they are seeing a hole in their Nanite mesh at as they move away from it. Using the Nanite debug view we observe at a certain distance ...

CharacterMovementComponent: NavWalking with high value for NavWalkingFloorDistTolerance can causes character meshes to be teleported up/down when crouching/uncrouching

UE - Runtime - Character - Nov 27, 2024

Context CharacterMovementComponent can be set in the NavWalking mode so that on the server the characters move using the navigation mesh as floor. This helps performance when the nav mesh is more c ...

Updating Material does not update platform stats in derived Instance

UE - Rendering - Architecture - Materials - Nov 26, 2024

It would seem that updating a material does not update the associated platform stats in a material instance editor, only the parameters. Can workaround by manually invoking shader compile in the ma ...

Crash on packaged dedicated server when a uproperty is marked as both replicated and editor-only

UE - Core - Cpp Tools - UnrealHeaderTool - Nov 26, 2024

In some situations, it can be useful to have a replicated editor-only C++ property (For example, the user that reported this issue was attempting to replicate settings to the client for game designe ...

Diffing blueprints in Perforce changelist reviewer incorrectly displays blueprints that reference assets not in local filesystem

UE - Framework - Blueprint - Nov 22, 2024

When diffing a blueprint in the Perforce changelist reviewer in-editor (Review Changelists), if the blueprint references an asset that does not exist locally but rather exists as a newly added asset ...

RegisterAssetTypeCategory failed as all user bits have been exhausted

UE - Editor - Open File Formats - Nov 22, 2024

Hi, with adding additional plugins, etc. to our project, we have encountered an issue with registering too many asset categories, such as: LogAssetTools: Warning: RegisterAssetTypeCategory("Water", ...

Bug: Relative File Paths for Asset Source Files are Incorrectly Generated for Engine and Engine Plugin Assets

UE - Editor - Open File Formats - Nov 21, 2024

When importing an asset like a Texture asset using the steps mentioned in the Repro steps, the imported asset does not have the correct relative path listed under the newly-created asset's "Source F ...

Invalid PropertyConnectedMask in layered material instance when base material doesn't use material attributes

UE - Rendering - Architecture - Materials - Nov 20, 2024

When UMaterialInstanceConstant::UpdateCachedData() updates CachedExpressionData.PropertyConnectedMask for material instances with layers incorrectly, it can lead to various graphical issues includin ...

Widget Flickering Observed in RetainerBox with Incorrect LayerId

UE - AI Workflows - UI Systems - UMG - Nov 19, 2024

Setting the Phase Count of a RetainerBox to 2 or more may cause other widgets within the same UserWidget to flicker. Upon investigation, we found that during frames where the flickering occurs, the ...

Lumen temporal flicker after leaving Editor open for 3+ days

UE - Rendering - Features - Lumen - Nov 18, 2024

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