check(!bPostTickComponentUpdate) fails triggered by UNiagaraComponent::CreateRenderState_Concurrent() and StaticMeshCompilingManager::FinishCompilation()

UE - Niagara - Rendering - Jul 23, 2024

Reported alongside [Link Removed] Context: Some ActorComponents can schedule end-of-frame work which UWorld executes later in the frame in UWorld::SendAllEndOfFrameUpdates(). By-design it appears t ...

check(!bPostTickComponentUpdate) fails triggered by ~FStaticMeshComponentBulkReregisterContext() and FD3D12DynamicRHI::ProcessInterruptQueueUntil()

UE - Gameplay - Components - Jul 23, 2024

Context: Some ActorComponents can schedule end-of-frame work which UWorld executes later in the frame in UWorld::SendAllEndOfFrameUpdates(). By-design it appears that it's not allowed to schedule mo ...

Nested PackedLevelActor bounds issue

UE - World Creation - Worldbuilding Tools - Level Instances - Jul 23, 2024

Light Leaking With Raytraced Shadows On Lights With Non-Zero Source Length

UE - Graphics Features - Ray Tracing - Jul 23, 2024

Light sources which have the source length attribute set to a value greater than zero seem to be leaking light through occluding geometry (see the image below and repro project). Moving it away from ...

Chaos Cache : Event tracks are not saved second or subsequent geometry collection recordings

UE - Simulation - Physics - Destruction - Jul 23, 2024

After the second recording time, the event listener registration in FGeometryCollectionCacheAdapter::InitializeForRecord is skipped. Here is a workaround :// We only need to register event handlers ...

Material not compiling due to WorldAlignedTexture connected to multiply

UE - Rendering Architecture - Materials - Jul 23, 2024

When a WorldAlignedTexture node is connected to multiply and then to a base color output, the material cannot be compiled, giving an error about an undeclared local variable "Local27". Does not happ ...

A crash occurs inside the Unreal Editor when we change the Spline Point type of a spline point, and we subsequently select another spline point

UE - Editor - Workflow Systems - Jul 22, 2024

In versión 5.4, a crash has been found when using splines inside the LevelViewport. This crash occurs when we change the Spline Point Type of a spline point, and subsequently we select another splin ...

Cannot instantiate an InstancedStaticMesh component with ConstructionScript

UE - Graphics Features - Jul 21, 2024

Starting with Unreal Engine 5.4, the logic for adding ISM instances by adding ISM components in the Construction Script (like below) has failed.  [Image Removed] This issue accidentally was introd ...

Horde can create multiple users with the same Perforce account

UE - Foundation - Horde - Jul 19, 2024

Users note seeing multiple accounts being added to Horde's user collection with the same account details. ...