Unreal Engine Issues

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 ...

Open Formats: 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 ...

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 ...

Collection Manager's GetAssetsInCollection returns nothing for dynamic collections

Custom Debug Camera Is Not Respected If Set Anywhere Other Than Code

The correct debug camera is no longer used if the class is set in a config file or within the Editor. When the debug camera is toggled on, the default will be used instead. If the class is set in co ...

Scrubbing the timeline in Sequencer can hang the editor when operating on constrained actors with complex control rigs

The issue is caused by UAnimDetailsProxyManager::ForceUpdateProxyValue triggering evaluation of constraints that are attached to control rigs. When scrubbing, requests to ForceUpdateProxyValue are ...

Race condition in GetFunctionSig_Write() and other function signatures

A race condition exists in GetFunctionSig_Write() and other places where FNiagaraFunctionSignature  is lazily initialized because multiple worker threads can progress past if (!Sig.IsValid()) and st ...

LevelInstance\PackedLevelActor: Problem with non-uniform negative scale.

A licensee is reporting transform issues related to using non-uniform negative scale on LevelInstances and PackedLevelActors. ...

Crash when a floor mesh is removed while a Vehicle has SimulatePhysics disabled

When SimulatePhysics is disabled, the constraint update is skipped, so a reference to an invalid (already-removed) particle is left behind. As a workaround, the approach suggested by the licensee — ...