Unreal Engine Issues
Unreal Engine Issues
Subsurface Profile material does not render properly in the Material Editor or Material Instance Editor
UE - Graphics Features - Dec 15, 2016Note: I looked for a similar or related bug but could not find one. Sorry if it's here and buried. Subsurface Profile materials render differently in the Material Editor Preview pane than they do a ...
Cannot hide most Blueprint categories from the Class Settings
UE - Gameplay - Blueprint - Apr 29, 2015Cannot hide most Blueprint categories from the Class Settings of a bp. x = Cannot hide Actor - Hid-able Add Component - x Add Event - x AI - x Animation - Hid-able Audio - Hid-able Canvas Render T ...
Custom Primitive Data on BP instance not taking affect while in editor
UE - Rendering Architecture - Apr 5, 2023https://udn.unrealengine.com/s/case/5004z00001n9LsOAAU/custom-primitive-data-on-bp-inst ance-not-taking-affect-while-in-editor Original Repo is from 4.27, however, it still happens in 5.2. This is ...
[CrashReport] UE4Editor_CoreUObject!FCompressedChunk::FCompressedChunk()
UE - Foundation - Core - Jul 24, 2017This is a common crash affecting users in 4.16 and the 4.17 Previews. The two descriptions provided by users say their crash occurred after updating their project from 4.13. User DescriptionsUpgra ...
AssetRegistry has poor performance when a large map is resaved
UE - CoreTech - Jun 21, 2024A licensee reports that their large map has a 10s cost in the AssetRegistry when resaved. They took a profile and found the cost is mostly in LoadCalculatedDependencies for the map, and most of that ...
MaterialX texture imports won't import files with the same name
UE - Editor - Content Pipeline - Import and Export - Apr 2, 2025Hello! When importing .mtlx files that contain textures with the same name (but different filepaths), only the first texture is imported. This seems to be due to the function CreateTextureNode() i ...
GAS: AbilitySystemComponent does not DestroyActiveState after re-entering play
UE - Gameplay - Gameplay Ability System - Oct 30, 2023UAbilitySystemComponent::DestroyActiveState() is called when the component is unregistered (OnUnregister) and when its destroyed (OnComponentDestroyed). It performs state cleanup such as canceling a ...
LevelSequenceActorSpawner::GetLevelStreaming() fails to compare sub level names when running in Pie
UE - Anim - Sequencer - Sep 26, 2019The problem is in the function with signature "ULevelStreaming* GetLevelStreaming(FString SafeLevelName, UWorld& World)" within LevelSequenceActorSpawner.cpp at line 30. The problem is with the Safe ...
Certain materials are failing to compile in sample projects
UE - Graphics Features - Jan 17, 2017Materials applied to the lava in the elemental demo are not rendering during the cinematic. With the dim lighting in the cinematic the lava appears very dark. The following shader compile warning ...
Unable to use OpenXR with non-Oculus Android platforms
UE - Platform - XR - Dec 1, 2022From Licensee: In OpenXRHMDModule:473 (UE5.0) or OpenXRHMDModule:497 (UE5.1) the engine is checking if the app is packaged for Oculus Mobile, if it isn't the case the function returns false and the ...