The "Make Static Mesh" feature for skeletal meshes does not account for disabled mesh sections.

UE - Anim - Rigging - Skeletal Editor - Dec 11, 2024

The licensee was not able to make static meshes with the correctly disabled sections from a skeletal mesh in the current implementation of the "Make Static Mesh" button in the editor. They have prov ...

Nanite mesh not culled when owner is editor only actor in gameview

UE - Graphics Features - Nanite - Mar 29, 2024

Nanite mesh is not culled because "DrawInGame" value in the primitive uniform buffer is always 1. Can be fixed with below modification:// in FPrimitiveSceneProxy::FPrimitiveSceneProxy DrawInGa ...

UInstancedStaticMeshComponent::AddInstances does not appear to be adding per-instance previous transforms when enabled

UE - Graphics Features - Dec 3, 2025

Instanced static mesh component does not add instances transforms to PerInstancePrevTransform array when using UInstancedStaticMeshComponent::AddInstances. Additionally Updating the transforms of th ...

Cooked content results in crash on launch of QAGame.exe

UE - Graphics Features - Feb 22, 2019

Seems to be an issue with how the cooker is calling the contents of TM-ShaderModels. ...

Translating bones in Persona is not affected by Snap Options

OLD - Anim - Dec 14, 2016

In Persona, moving a socket around is not affected by any changes to snapping (scale or size). Rotation is affected however. This is similar to [Link Removed], but according to James Golding there ...

Landscape Disappears from Scene After Being Added to Sequence

UE - Anim - Sequencer - Mar 21, 2018

Landscape disappears from scene if added to a sequence, selected in scene, and the one of the tracks in sequencer(not the landscape that has been added) is selected again Landscape was added to t ...

Cannot successfully create a local binary build of the Engine that includes iOS

UE - Foundation - Build - Rocket (Installed Engine) - Jun 6, 2018

Attempting to create a local binary build of the Engine that includes iOS currently fails. The error message that appears ("ERROR: System.Collections.Generic.KeyNotFoundException: The given key was ...

Construction Script Does Not Update Parameters Of An Actor Component

UE - Gameplay - Oct 16, 2018

The construction script does not update the parameters of the actor component. Found in 4.19 CL# 4033788, 4.20 CL# 4369336, 4.21 Preview 1 CL# 4435822, 4.22 CL# 4470579 ...

Material Instance Can't Update Material Parameters Defined in a Material Function Within a Material Layer

UE - Rendering Architecture - Materials - Nov 21, 2018

When you edit the parameters of a material function that is within a material layer from the material instance, the material instance does not update. Found in 4.20 CL# 4369336, 4.21 CL# 4541578, a ...

Incorrect/Different hard shading on meshes in Forward Shading

UE - Graphics Features - Dec 18, 2018

With forward shading enabled in 4.21 shading appears to be too hard on certain faces. This is working as expected in 4.20 CL# 4369336 Found in 4.21 CL# 4613538 and 4.22 CL# 4666322 ...