Shading error after flipping normals on mesh

TM - Interoperability - Mar 11, 2025

As far as I can guess is that in the initial state of the object, the vertex normals are as they come from the DCC, but after the modeling operation they get recalculated somehow that doesn't match ...

Point light leaking throught thin geometry

UE - Graphics Features - Oct 29, 2024

In 4.27, ray traced point lights can leak through thin meshes. This bug does not exist in Unreal Engine 5, due to many of the potential rendering areas being fundamentally changed. ...

[Feature Request] Allow bulk-assignment of values during blend profile/mask creation

UE - Anim - Runtime - Oct 16, 2024

Users have reported that manually editing each bone when generating blendmasks to be tedious and could be easier with some bulk editing functionality. ...

[Feature Request] Allow bulk-assignment of values during blend profile/mask creation

UE - Anim - Runtime - Oct 16, 2024

Users have reported that manually editing each bone when generating blendmasks to be tedious and could be easier with some bulk editing functionality. ...

Decals custom depth/stencil side effect from Lumen

UE - Graphics Features - Oct 15, 2024

The order of passes related to Decal rendering (without the DBuffer) and CustomDepth is changed by the CVar "r.Lumen.AsyncCompute", even when Lumen is not enabled. This causes Decal Materials that ...

[PCG] Handle potential deadlock case with UPCGLandscapeCache::GetCacheEntry

UE - World Creation - Procedural Tools - PCG Core - Oct 15, 2024

It is possible to get in a rare situation where PCG uses all Background workers while also having all its workers waiting on the FPCGLandscapeCacheEntry DataLock critical section. Since loading of ...

Is there a particle smoke that matches the world lighting 100%?

UE - Niagara - Oct 14, 2024

Niagara particle sprites with a Translucent Material are glowing in a completely dark area. This issue is also observed with the deprecated Cascade particles. Particle brightness is also dependent ...

Dark square appears in hair in direction of spotlight when shadows disabled

UE - Graphics Features - Sep 18, 2024

A dark square appears in the direction of a spotlight on hair when the spotlight has no shadow. [Image Removed] In UE 5.4 the dark square is visible when the spotlight has no shadow, and a light s ...

Text wrapping issue when zooming in the UE Editor

UE - Editor - UI Systems - Slate - Sep 14, 2024

I think it's caused by the wrap size doesn't change when the UMG Design Window zooms. ...

Passthrough in ARHandheld Template fails to work on Android

UE - Platform - XR - Sep 11, 2024

After using the Begin Scan, the application does not show anything with the camera, though it should be noted that you can still find, select planes and then place the model on it. For now the bug w ...