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 ...

[Alias] Reimport of a StaticMesh failed

UE - Editor - Content Pipeline - CAD - Oct 25, 2022

The user suggest to add the option "Only New Meshes" ...

Derived struct data is not copied to Base struct

UE - Gameplay - Blueprint - Feb 19, 2024

The actor Blueprint is intentionally causing an object slice to occur. In other words, we're copying a derived type to a base type, so the expectation is that only the inherited base properties are ...

Crash editor when raytracing is enabled and enter kanji characters into TextRenderActor

UE - Graphics Features - Ray Tracing - Apr 25, 2024

The editor crashes when entering Kanji characters into TextRenderActor with raytrace enabled. This does not happen with English text.  ...

ToString() from a StringTable entry now returns <MISSING STRING TABLE ENTRY>

UE - Editor - UI Systems - Localization - Apr 10, 2024

This is a regression from 5.3 that has been fixed in Main (32476819, for 5.5), but needs merging into 5.4. ...