Unreal Engine Issues

UV Rotation does not work for video materials

The rotation parameter of video materials does not function in Twinmotion 2024.1.2 and Twinmotion 2025.1 PR. Adjusting the slider does not have any effect. Feature last worked in Twinmotion 2023.2 ...

Swapping the C++ Root Component from a Child BP class, pressing Save, Compile, but not Saving afterwards, will leave the Root Component in a locked state, meaning the it cannot be viewed or edited in the Details Panel after an Editor restart

Swapping the C++ Root Component from a Child BP class, pressing Save, Compile, but not Saving afterwards, will leave the Root Component in a locked state, meaning the it cannot be viewed or edited i ...

Geometry Collection (GC) fragments are affecting the Navmesh in wrong positions

Geometry Collection (GC) fragments are affecting the Navmesh in wrong positions and the identified cause is wrong indexing. Once a GC breaks, it's fragments, when big enough, are creating islands in ...

Issue with PLA Editing inside another PLA causes Z-Fighting or Mesh Disappearance.

When editing a Packed Level Actor (PLA) that is inside another PLA, z-fighting or mesh disappearance will occur. More specifically, it is seen when duplicating a mesh inside the PLA, upon saving the P ...

Extra state view icons don't show up properly in the Content Browser

r.Lumen.Reflections.DownsampleFactor split screen artifact

In Split-Screen, with "r.Lumen.Reflections.DownsampleFactor" set to 2, it is possible to have vertical colored artifacts on View 1 (the second view). The Licensee reported the artifact occurred on ...

Volumetric Lightmaps Disappear After Building Levels

SketchUp UV scale is not consistent for Datasmith imports.

This is not a regression.  We have 2 issues here.  First we have different tiling for the different materials, since the way sketchup handles texture scale. They scale the UVs of the object instead ...

Editor Crash When Using FRequestPlaySessionParams GlobalMapOverride To Load World Partition Map

The licensee has been using a custom CVAR to launch directly into PIE for a world partition level. Since updating to 5.4, this now causes an editor crash. The main factor appears to be whether or no ...

VR Preview crash when shadow quality is set to low

[/Script/Engine.RendererSettings] r.Tonemapper.Sharpen=2 r.TemporalAA.Upsampling=False r.DefaultFeature.AutoExposure.ExtendDefaultLuminanceRange=True r.LightPropagationVolume=0 r.ReflectionCaptureRe ...