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 ...

Affect Indirect Lighting While Hidden can affect the environment after data layer unload in editor

UE - Graphics Features - Sep 9, 2024

After setting Affects Indirect Lighting While Hidden but before saving the level, the emissive contribution persistents through datalayer visibility toggles. This does not appear to occur in PIE, on ...

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 ...

Dynamic Material instance Does Not Return Scalar Parameter Values Array Correctly

UE - Graphics Features - Apr 25, 2017

It appears that MIDs do not return Scalar Parameter Values in an array. It will return the parameters during runtime but not in the construction script. The steps are meant to show you that you ca ...

Spawned skeletal animations don't animate

UE - Anim - Sequencer - Oct 30, 2017

Variable Value Range doesn't work during Runtime

Tools - Jul 3, 2018

If a variable has been set to a default value and has a declared value range, it will ignore the value range and print the set value.The tooltip text is misleading or out of date as it gives the imp ...

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. ...