Unreal Engine Issues

Using the end of the curve as a weighted tangent does not yield the expected value.

When changing the tangent value, the last value is sometimes not 1.0 [Reproduce sample project] [Link Removed] ...

SwapRootBone_Actor ignores a relative rotation

When we use SwapRootBone_Actor, we expect to move in the X-axis direction, which is the forward direction of the Actor. However, it does not take into account the RelativeRotation of the Skeltalmesh ...

Specular/Anisotropy problems with Nanite Meshes

Specular highlights can disappear with clearcoat materials, when "Clear Coat Enable Second Normal" is enabled ("r.ClearCoatNormal"). ...

View Distance sorting of Niagara sprites is incorrect when far from the origin

This problem seems to occur on both CPU and GPU Sims. ...

Anisotropy not working correctly when used in Material Layers

1. When a Material Layer is applied and there is no node connected to Anisotropy in the master material(M_Test_1), the material does not function correctly after packaging, although it works properl ...

Pixel Inspector does not display Gbuffer values properly when a mesh with a material that has Anisotropy set is in Level

This issue occurs when there is a material with Anisotropy, like the attached GIF.[Image Removed] ...

Depth of field rendering artifacts - flickering and masking

Flickering and large flashes can be seen on reflective objects that are out of focus with DOF enabled. DumpGPU shows that artifacts are visible in TSR . ...

Nanite static mesh is still visible even if "Render in main pass" or "Render in depth pass" is used

Lumen indirect lighting artifacts when far from world origin

Lumen seems to not be using Large World Coordinates somewhere. The Lumen Scene develops artifacts at large distances (5000 KM) from the world origin. ...

Lumen with HWRT has an artifact on AMD GPU

Repro test required.We don't have AMD GPU to create the same environment here, so we collected reproduction information from the licensee and passed it on as is.Let me know if you need any additiona ...