GetMouseX returns stuttering value if ShowMouseCursor is enabled

UE - Gameplay - Input - May 11, 2022

Showing the mouse cursor and holding down the left mouse button while dragging will cause the MouseX event to broadcast incorrect axis values.  ...

AO Decals not working when using Lumen

UE - Graphics Features - Oct 14, 2022

When lumen enabled, and with static lighting disabled, we expect the Material AO to contribute to diffuse lighting occlusion. However AO from decals does not have any effect. ...

[Legacy][FBX] Animation curves are not added to the skeleton anymore

UE - Editor - Content Pipeline - FBX - Jan 17, 2025

When painting on a landscape with edit layers, there are UV distortions happening across the boundaries of paint layers when material is using SetMaterialAttributes

UE - Graphics Tools - Terrain - Landscape - Mar 10, 2025

Context Landscape Edit Layers enables users to paint landscapes using non-destructive layers, and can add multiple layers to the landscape that can be edited independently from each other. Problem ...

Foliage rendering issues when using both Density Scaling and MaxWorldPositionOffsetDisplacement

UE - Rendering Architecture - Aug 29, 2024

When a material with WPO effects and MaxWorldPositionOffsetDisplacement is applied to a foliage mesh, foliage applied to a map will no longer work as expected with density scaling, especially after ...

Property "GameFeatureData.PrimaryAssetTypesToScan.Directories" should be tagged with "ForceShowPluginContent"

UE - Foundation - Oct 11, 2025

When using a Game Feature Plugin, one of the settings available in the "GameFeatureData" DataAsset (class UGameFeatureData) is "PrimaryAssetTypesToScan", which is an array of FPrimaryAssetTypeInfo s ...

Priority order of texture parameters on post process material instances is inverted

UE - Graphics Features - Jan 13, 2025

The texture parameters on material instances applied to post process volumes do not respect the priority order of the post process volume, and are in fact inverted relative to the priority of other ...

TMatrix<T>::InverseFast() ensure when running URootMotionModifier_SkewWarp::WarpTranslation().

UE - Anim - Gameplay - Oct 3, 2025

URootMotionModifier_SkewWarp::WarpTranslation() uses InverseFast() within a block of code that is only executed if DeltaTranslation is not nearly zero. The ToRootSyncSpace transform the code builds, ...

Mover plugin: Crash on UFloorQueryUtils::ComputeFloorDist() and other utility functions that assume the pawn uses a UCapsuleComponent

UE - Gameplay - Player Movement - Mover - Dec 4, 2025

The following functions have been found to perform unchecked casts of the pawn's "UpdatedComponent" to class UCapsuleComponent, possibly resulting in crashes:UFloorQueryUtils::ComputeFloorDist()UGro ...