Draw debug will crash visionOS

UE - Platform - XR - Dec 17, 2024

Substrate SSR reflections are black

UE - Graphics Features - Substrate - Dec 17, 2024

Substrate Materials do not use Screen-Space reflections. Instead, they do not have any reflections (indirect specular) on the surface. ...

UserSceneTexture Post Process Material Renders Incorrectly When ScreenPercentage is Below 100

UE - Graphics Features - Dec 17, 2024

When using a UserSceneTexture in a post-process material, a visible rendering issue occurs if the viewport's ScreenPercentage is set to below 100. This issue looks like it might stem from an incorre ...

Use actor factory for creating volumes through GeometryScript CreateNewVolumeFromMesh

UE - Graphics Tools - Modeling Tools - GeometryScripting - Dec 16, 2024

iPadOS AR App Crashes when ARKit's "Use Scene Depth for Occlusion" is Enabled

UE - Platform - XR - Dec 13, 2024

Does not crash in 5.4 on same hardware so looks like a regression. Attached Unreal logs indicate source of critical error: 'FARKitCameraOverlayMobilePS' shader uniform expression set mismatched sh ...

Keying Level Sequence Crashes Engine

UE - Anim - Sequencer - Dec 12, 2024

Repro rate 3/5 Regression to be tested Testing with a fresh level sequence no crash occurs, Tried to do it without rekeying and did not get a crash. I repro'd it a few times and sometimes no crash ...

COM Media Type error in video writer on 8K videos

TM - Rendering - Dec 12, 2024

360 videos set to 8K resolution will fail to render in Twinmotion 2024.1.2 and newer Render attempts will end abruptly shortly after being initiated with the following error message ion the logs L ...

Sequencer events with a payload of struct containing Object do not work

UE - Anim - Sequencer - Dec 12, 2024

A structure containing Object as a parameter is misrecognized as a single Object and loses the parameter. This behavior was brought in by CL-27785664. ...

Skeletal Mesh gets stuck in T-Pose when using sequencer animation track with animation blueprint

UE - Anim - Sequencer - Dec 11, 2024

If an actor that is set up to use an anim blueprint is used in the sequencer, then a property on the skeletal mesh is changed in the sequencer details panel. The actor will not evaluate any animatio ...

Mover flying mode rotation changes may be incorrect with roll involved

UE - Gameplay - Player Movement - Mover - Dec 11, 2024

A licensee has reported that Mover's method of adding rotators together may produce different results than quaternion multiplication - for example in Flying mode when roll is involved. We will inve ...