Unreal Engine Issues

Clay render ignores season for trees

ReturnUntouchedSceneColorForPostProcessing ignores view overrides and breaks splitscreen

When a view extension uses ReturnUntouchedSceneColorForPostProcessing and uses split screen, the final view is incorrect (clipped) because ReturnUntouchedSceneColorForPostProcessing doesn't take int ...

Linux Crash Reporter can fail due to exceeding crash malloc space when generating the report

On Linux a crashing process can fail to produce a crash report at all. The crash folder is created and contains CrashContext.runtime-xml and Diagnostics.txt, but the copied log file is 0 bytes, Cras ...

Unexpected offset when using attach tracks with scene root components

We noticed an inconsistency when using attach tracks, depending on whether or not the parent actor has a default scene root. This creates an unintuitive behaviour for animators. It can be reproduce ...

5.8 Run Construction Script in Seqeuncer hiding control rigs

Controls don't display in viewport if the container blueprint has "Run Construction Script in Sequencer" enabled. We've also noticed spawned control tracks temporarily disappearing from sequencer. ...

World Partition - HLOD: baked HLOD textures contain unresolved runtime virtual texture content

Baking HLODs for actors that sample Runtime Virtual Textures produces incorrect baked textures: blurry or unresolved RVT tiles, fully black tiles on the first bake of an editor session, and washed-o ...

USD Export – Support exporting all UDIM tiles when using “Bake Materials”

Hi, I noticed an issue when exporting USD assets that contain materials using UDIM textures. When exporting USD, the “Bake Materials” option allows me to export the base textures and relink them c ...

Visibility managemente in USD Stage Actor

Working with a big USDStageActor is complicated due to visibility management. We are importing "simple" environments from usd files through the USDStageActor. However, when the artist wants to hide ...

Issue with importing alembic files: the skeletal mesh asset doesn't contain LOD description

Helloo everyone!! 😄 We are experiencing an issue with importing skeletal meshes from alembic. For reference, this issue happens in vanilla engine 5.7.4, but it doesn't occur in versions 5.6.x. 1) ...

SceneCaptureComponent2D destroys shared Lumen Radiosity atlases every frame, breaking temporal accumulation in the main view

A USceneCaptureComponent2D with bCaptureEveryFrame = true and default post process settings causes FLumenSceneData::IndirectLightingAtlas and RadiosityNumFramesAccumulatedAtlas on the sharedScene->D ...