An Assertion is thrown when connecting a Vertex Interpolator nod to PerInstanceCustomData node to the Result node

UE - Rendering Architecture - Materials - Apr 20, 2022

Assertion is thrown when connecting a Vertex Interpolator nod to PerInstanceCustomData node to the Result node. ...

SingleSampleShadowFromStationaryLights does not work in UE5 (when GPU-Scene is used)

UE - Graphics Features - Shadows - Jul 21, 2022

The flag is not propagated in FPrimitiveSceneShaderData::FPrimitiveSceneShaderData and so is missing in GPU-Scene primitive data. Need to add: .UseSingleSampleShadowFromStationaryLights(Proxy->UseS ...

StateTree : Crash when executing GetPropertyRef in SubTree linked via Linked Asset

UE - AI - StateTree - Aug 26, 2025

A crash occurs when GetPropertyRef node is executed from a SubTree that is linked within a StateTree, which itself has been linked from a parent StateTree via a Linked Asset ** . The processing con ...

WidgetBlueprint::DrawLines has broken AA on sharp cornered lines

UE - Editor - UI Systems - May 9, 2016

WidgetBlueprintLibrary::DrawLines which calls FSlateDrawElement::MakeLines has broken AA for sharp cornered lines. ...

Editor freezes when setting browser filepath for inserted element in project settings

UE - Platform - Mobile - Feb 7, 2017

May be similar issue as [Link Removed] but with slightly different repro steps. Not a regression as it occurs in 4.14.3 ...

Spawned skeletal animations don't animate

UE - Anim - Sequencer - Oct 30, 2017

Blend Space Per Bone Blend does not apply blend weight correctly

UE - Anim - Runtime - Aug 30, 2019

The Blend Space's Per Bone Blend doesn't always apply its interpolation speed correctly to the appropriate bone or at all. ...

When editing a Niagara module an error can occur if using non-module functions, even with a correctly set usage bitmask

UE - Niagara - Feb 14, 2023

When editing the module the call to FHlslNiagaraTranslator::HandleDataInterfaceCall has the usage "Module", so it treads the module as if that was its stack context, even though the module's usage b ...

Incorrect conversion when using FUnitConversion::Convert

UE - Foundation - Core - Jun 5, 2020

Incorrect conversions values received and using FUnitConversion::Conversion ...