Loading instanced static mesh causes memory leak in packaged game

UE - World Creation - Worldbuilding Tools - Foliage - Mar 3, 2021

The leaking variable is UInstancedStaticMeshComponent::InstanceDataBuffers. The memory block is passed to InitPerInstanceRenderData() via InstanceDataBuffers.Release(). But the function doesn't mana ...

Texturing: RC 1.5 texturing hangs, RC 1.4.2 works fine with same dataset and workflow

RC - Texturing - Feb 13, 2025

Tested on the provided project, it looks like the unwrap was provided, but then the process stuck. I also checked the Task manager and there wasn't almost any activity for RealityCapture.[Image Remo ...

Cull Distance Volumes Affecting Actors After Being Deleted

UE - Graphics Features - Oct 7, 2019

Cull Distance Volumes Affecting Actors After Being Deleted. Found in 4.22 CL# 7053642, 4.23 CL# 8386587, and 4.24 CL# 9428115 ...

Static Mesh Component Scale Displays Incorrect Values on Static Meshes as Scene Roots

UE - Gameplay - Blueprint - Mar 8, 2016

Static mesh components incorrectly display scale information through the Detail's Pane and Blueprint editor window until simulation is pressed. This occurs if the static mesh component is moved to t ...

Ease Function resets Blend Exp on Restart

UE - Gameplay - Blueprint - Jan 27, 2015

The Ease Node when set to use the Function Ease In, Ease Out or Ease InOut the Blend Exp will reset to 2.0 on each editor reload. It will even break variable inputs to return to 2.0. Reproduced in ...

Refraction broken when using material function

UE - Graphics Features - Aug 10, 2021

Licensee has provided a BP workaround ...

GameplayEffects: Inherited UAssetTags and UTargetTags do not update their referenced tags correctly with inheritance

UE - Gameplay - Jan 25, 2024

When inherited, it is reasonable to expect the tags added by the parent to be reflected in the children. If the parent is editted after the children, however, tags that are added or deleted are not ...

Dithered LOD transitions sometimes briefly flicker to the next LOD before fading

UE - Graphics Features - Jun 12, 2025

When dithered LOD transitions occur, a brief flash of the next LOD level is first shown on the entire mesh after which the current LOD fades to the next (or previous) LOD. The flashing behavior only ...

Per-object shadow corrupts on Android Vulkan

UE - Platform - Mobile - Jul 2, 2020

Actors on an axis and in multiple cells are not culling

UE - World Creation - Worldbuilding Tools - World Partition - May 12, 2022

Actors on an axis and in multiple cells are not culling as expected. ...