RGB/UINT10 HDR Format not using ST.2084

UE - Rendering - Architecture - RHI - Aug 23, 2021

Specification here: [Link Removed] Which is mirrored in engine in FD3D12DynamicRHI::Init (for example): [Image Removed] However, FWindowsPlatformMisc::ChooseHDRDeviceAndColorGamut always returns ...

Marketplace plugins "missing precompiled manifest" on Mac

UE - Platform - Apple - Oct 12, 2021

Summary This issue was reported by a licensee via UDN. It appears that all of the plugins generate a "missing precompiled manifest" error when packaging a project on Mac in UE4.26.2.Licensee Platfor ...

Editor crashing with density scaling is enabled on foliage being placed on a terrain.

UE - World Creation - Worldbuilding Tools - Foliage - Jan 3, 2022

Created a new level and added a terrain. Added grass foliage and enabled density scaling located in the grass foliage settings mode. After placing foliage on terrain, the editor crashes. This is ...

Movie Render Queue Renders Black Frames when MultiSample Effects Are Disabled

zComponent - Archive - Apr 25, 2022

Occurs 5/5 times. When 'Disable Multisampling Effect' is enabled, the Render Warm Up is set to 0, and the Custom Playback Range is set to a small value, frames render out fully black. Regression d ...

Composite Decorator Graph nodes are not updating titles when changes are made to the properties of a node

UE - AI - BehaviorTree - May 5, 2022

Composite Decorator Graph nodes are not updating titles. Upon closing and reopening the Composite Decorator Graph, the nodes do refresh to their properly set title. Repro Rate: 3/3 Tested this in ...

Crash when enabling r.PSOPrecache.Resources due to check() in FSkeletalMeshObjectGPUSkin::GetUsedVertexFactoryData

UE - Rendering - Architecture - Dec 3, 2024

The game crashes because of a nullptr SkinnedMeshComponent in  FSkeletalMeshObjectGPUSkin::GetUsedVertexFactoryData when r.PSOPrecache.Resources is enabled and a skeletal mesh is loaded due to a new ...

SetActorLabel() is slow on Landscapes

UE - Graphics Tools - Terrain - Landscape - Jan 7, 2025

I've noticed calling SetActorLabel() on a Landscape will call PostEditPropertyChanged() which causes the Landscape Components to regenerate all collisions. As per the repro, this can take a long tim ...

Cannot export a Datasmith scene to the Unreal Engine project root folder on MacOS.

TM - Interoperability - Oct 29, 2024

This is mac specific. I could do the export normally on Windows with the same Twinmotion CL and UE version (5.5 preview).  It is also a regression specific to 5.5, since I've been able to export a d ...

Painted Vertex Color on Meshes in BPs do not save when Movie is generated from Matinee

Tools - Jun 16, 2015

When you render out a movie from a Matinee, the painted Vertex Colors on a Blueprint does not render, the meshes in the Blueprint revert to imported vertex color. Also Reproduced in 4.8.0 and Main ...

Importing Mesh with "Import Animations" enabled crashes editor.

OLD - Anim - Nov 13, 2015

After importing a mesh with "Import Animations" enabled the editor crash's. Importing only the mesh does not crash the engine. Importing animation separately and assigning to Skeletal mesh on import ...