When a BPActor containing HISMs is multiplied with a scale, LOD display control doesn't work correctly

UE - Rendering Architecture - Nov 29, 2023

Workaround 1: 1. Change HierarchicalInstancedStaticMesh.cpp in either of the following ways:void{{ FHierarchicalStaticMeshSceneProxy::GetDynamicMeshElements(const TArray<const FSceneView*>& Views, c ...

Data Asset Instances created from Blueprints and are not selectable in asset pickers until their parent Blueprint is loaded. They are also not displayed correctly in the Content Browser

UE - Framework - Blueprint - Sep 3, 2024

Consider a C++/BP class containing an EditAnywhere/InstanceEditable variable with type (UDataAsset*), (UPrimaryDataAsset*), or any of their subclasses. When setting this variable using a Property Ed ...

Changing Area Light Settings In Blueprint Causes Crash

OLD - Enterprise - Aug 27, 2018

Changing area light settings in blueprint will Cause a crash. Found in 4.20 CL# 4302132 and 4.21 CL# 4307852 Unable to test in 4.19 due to provided project being in 4.20 ...

Hovered state does not fire when "Use Mouse for Touch" is set to true

UE - Editor - UI Systems - Slate - Jun 6, 2017

Hovered state does not fire when "Use Mouse for Touch" is set to true. As a note this also happens in a packaged game if the setting was set to true. ...

NPC - Initializing a System parameter to a Niagara Parameter Collection data interface parameter does not work

UE - Niagara - Data Interface - Jan 4, 2021

Initializing a System parameter to a Niagara Parameter Collection data interface parameter does not work ...

[CrashReport] UE4Editor-Engine!FDefaultMaterialInstance::GetMaterialWithFallback(ERHIFeatureLevel::Type,FMaterialRenderProxy const * &,FMaterial const * &) [material.cpp:292]

UE - Graphics Features - Jan 25, 2019

Comment in crash group:I switched color and crashed Generated from CrashReporter ...

Resetting material instance parameters to default value does not update the appearance of the object that the material is applied to

UE - Rendering Architecture - Materials - Mar 10, 2025

When a material instance with exposed parameters is applied to a landscape; the parameters set to a new value and then reset to back the default value, the landscape does not respect the new default ...

Incorrect Sampler Type of Normal Texture Samples for M_CobbleStone_Rough Material from Starter Content

Docs - Samples - May 6, 2015

The M_CobbleStone_Rough Material from Starter Content needs to have all the Normal Texture Sampler Types set to 'Normal' from 'Color' ...

iOS package with Metal Desktop Renderer renders reflections incorrectly

UE - Rendering Architecture - RHI - Apr 15, 2022

When having Metal Desktop Renderer ON, the project renders incorrectly and shows a coloring/lighting issue on the character's reflection. ...

Depth of field and Refraction issue

UE - Rendering Architecture - May 15, 2024

Refraction does not adjust the scene depth texture, leading to a mismatch between Scene Color samples and Scene Depth samples. ...