Metahuman eyes black on close up with ray traced skylight.

UE - Graphics Features - Lumen - Jun 17, 2021

[Interchange][FBX] Bone orientation is different between legacy and interchange import with the ForceFrontXAxis

UE - Editor - Content Pipeline - Import and Export - Jan 16, 2025

When importing FBX files using the Interchange and legacy import with Force Front X Axis enabled, the transforms of the bones in the imported FBX models will not match. ...

Landscape with increased scale value does not sculpt with low strength brushes

UE - LD & Modeling - Terrain - Landscape - Dec 18, 2014

A landscape that has been increased in scale by using the Transform values of the Detail's pane does not allow small brushes with low strength to sculpt them. ...

Refraction not working with MakeMaterialAttributes

UE - Graphics Features - Sep 14, 2015

When setting a material to Use Material Attributes and then feeding in a Refraction value with MakeMaterialAttributes, the refraction doesn't work properly Reported in 4.8, but I tested in Main as ...

Character No Longer Able to Use Nav Link After NavMesh Update

UE - AI - Feb 10, 2017

Causing a Nav Mesh update, such as by moving an actor into the NavMesh that will create a hole, seems to be breaking Nav Link Proxies by preventing characters from being able to use them. ...

Crash occurs when RayTracing.ExcludeDecals is enabled

UE - Graphics Features - Lumen - Sep 16, 2020

The cause of the crash is out-of-range access to the array. ExcludeDecals eliminates the mesh instance to which the decal material is assigned, but it seems that the MeshCommand has been registered ...

Collision jitters when going up stairs, causing erratic overlap events.

UE - Simulation - Physics - Jan 11, 2016

When overlapping with another object while moving up stairs with a character, the overlap events (OnBegin / OnEnd) that occur will be called multiple times in an alternating fashion. This will also ...

marquee selection in orthographic view selects all bsp brushes, even those not located within marquee selection.

UE - LD & Modeling - Modeling Tools - BSP - Jan 14, 2015

Marquee selection in an orthographic view selects all bsp brushes in level, even if they are not under the marquee selection. ...

Vertex Painting - Unexpected behaviour when painting Skeletal Mesh with Low Radius Brush

Tools - Oct 21, 2019

Unexpected behaviour when painting skeletal meshes with small radius brush. This does not occur with static meshes. Confirmed in 4.25 MAIN @ CL 9730599 ...

Can't assign LightMapCoordinateIndex on Static Mesh with generated LODs

Tools - Jan 10, 2020

Once a static mesh have generated LODS, the only lightmap index value the static mesh editor's UI accepts is 0. We should be able to set the index to any value between 0 and 3 as long as there are ...