Conditional crash when a DragAndDrop operation is done betweeen Data Layers.

UE - World Creation - Worldbuilding Tools - Data Layers - May 8, 2024

A crash occurs to the engine as when we when have unreal as a backgroud task, and we try to drag and drop a layer to another by selecting the layer visibility button. ...

Cached camera component on LevelSequencePlayer is null

UE - Anim - Sequencer - May 13, 2024

Opening a Level inside the ReferenceViewer does not Prompt the Save window if the Level is dirty.

UE - Editor - Applied Usability - Apr 15, 2024

If you right click on a level node in the reference viewer and choose edit, it will bypass prompting you to save unsaved changes in your current level, silently discarding all unsaved work. ...

MRQ - Groom Issue with Stencil Layers

UE - Anim - Sequencer - MRQ - Jan 31, 2023

There is a problem with rendering Grooms bound and attached to animated skeletal meshes when the mesh belongs to a stencil layer in both the Deferred Renderer or the Path Tracer. The groom does not ...

Water not rendering in Movie Render Queue

UE - LD & Modeling - Terrain - Water - May 3, 2024

It appears that MRQ does not actually add the pass that updates the Water Info Texture in the WaterZone actor. If the Skylight is set to "SLS Captured Scene" and does not capture every frame, then t ...

GPU Crash in Niagara Fluids template when WorldSpaceSize has a component at 0

UE - Niagara - Apr 26, 2024

The NiagaraFluids plugin provides several Niagara System templates to use as a starting point for the user's own Systems. The templates in category "3D Gas", such as "Grid 3D Gas Explosion", include ...

Crash in ULandscapeComponent::UpdatePhysicalMaterialTask() during landscape sculpting undo operations

UE - LD & Modeling - Terrain - Landscape - Apr 11, 2024

Using landscape sculpting tools, then executing Undo with Ctrl+Z ...

Serialized Blueprints containing MIDs do not load correctly in packages.

UE - Rendering Architecture - Materials - May 8, 2024

This issue is an easy fix but raises a different problem which is likely ingrained in UE, which is that MIDs should not be serialized out and should always be transient. Unfortunately we are in a po ...

Take Recorder - Viewport Freezing and Performance Degradation When Recording Without Subsequences

UE - Anim - Sequencer - Take Recorder - Apr 11, 2024

Description: In Unreal Engine 5.4, when recording camera movements using the Take Recorder with the "Record Sources Into Sub Sequences" option turned off, significant viewport freezing and performan ...

Static Mesh cooking: Bad mesh description should not crash the cooker

UE - LD & Modeling - Modeling Tools - Mesh Editing - Aug 21, 2023

FStaticMeshRenderData::Cache has the assertion: checkf(Owner->IsMeshDescriptionValid(0), TEXT("Bad MeshDescription on %s"), *GetPathNameSafe(Owner)); This assertion can be triggered by data erro ...