Unreal Engine Issues

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 ...

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 ...

Moveable Spotlight Shadows doesn't render in right eye

Digital buttons for gamepad thumbsticks and triggers can fire multiple times per-frame in Game Input

In Game Input, the buttons for different thumbstick and trigger digital events (i.e. RightStickUp, LeftStickUp, LeftStickRight, etc) can actually fire multiple times in a single frame, even though w ...

Iris - always relevant actors placed in the map do not appear in the debug list

This seems to occur regardless of which filter is used and whether bNetLoadOnClient is true or not. ...

Exporting process stuck in "Estimated time" phase when uploading projects with Panorama Sets & Presentation after freshly booting TM

Cloud Build: TWINMOTION CL app-2023.2.33001994-2024.1.37216540-2025.1.38508591-cloud-2024.12.02.095314 (DEV / STAG, CHROME) Issue: Exporting process stuck in "Estimated time" phase when uploading p ...

Duplicated TextureLoadVirtualPageTable in GetCustomData functions in generated HLSL add to the total instruction count due to TextureLoad having side effects

When using materials with CustomData inputs, such as the Eye material with Iris Distance and Mask, Virtual Texture samples will increase the instruction count for each unique VTPageResult. Each cus ...

Enabling "ShowFlag.PhysicalMaterialMasks" causes editor crash when physical material masks aren't yet imported.

When there is a physical material mask asset that has been created and applied to a mesh in the level without having a texture source imported yet, and then "ShowFlag.PhysicalMaterialMasks" is enabl ...

Playing a Haptic Soundwave will crash the editor

FRenderThreadCommandPipe::EnqueueAndLaunch does not properly capture/reapply LLM Context in all situations

When multiple render commands are enqueued before the graph task runs for a prior enqueued command, the new commands will be put into the Queue for the task to run and no context is captured. When t ...