Unreal Engine Issues
Unreal Engine Issues
Moving a saved duplicate of an OpenWorld level crashes the Editor
UE - World Creation - Worldbuilding Tools - Mar 19, 2025Moving a saved duplicate of an OpenWorld level crashes the Editor. The act of moving the duplicated OpenWorld level crashes the Editor the moment the engine tries to delete the original level, so it ...
FSkeletalMeshComponentInstanceData subclasses FSceneComponentInstanceData instead of FPrimitiveComponentInstanceData
UE - Anim - Rigging - Mar 19, 2025FSkeletalMeshComponentInstanceData subclasses FSceneComponentInstanceData instead of FPrimitiveComponentInstanceData. When calling ApplyToComponent() the SceneComponentInstanceData version will be c ...
Discrepancy in FBX import on animations
UE - Editor - Content Pipeline - FBX - Mar 19, 2025In the attached screenshots, the following Animation Sequence assets are wrong: * FX_WST050_pSphereB1_TS_AnimFX_WST050_pSphereC1_TRS_AnimFX_WST050_pSphereC1_TRS_AnimFX_WST050_pSphereD_TR_Anim If yo ...
Vehicle Template with Thruster Configuration will be affected by force relative to the distance from the origin
UE - Simulation - Physics - Mar 18, 2025Vehicle Template vehicle with added Thruster Configuration to its VehicleMovementComponent will be affected by force relative to the distance from the origin. At around 200000 the force is enough to ...
Enabling Override Instance Data to a LevelSequencerActor that has a Shot Track can lead to crashing the engine
UE - Anim - Sequencer - Mar 17, 2025Enabling Override Instance Data to a LevelSequencerActor that has a Shot Track can lead to an Actor being translated really far, or even a crash in the engine. The licensee has encountered a particu ...
High Virtual Texture Sample/Lookup Cost when using a Virtual Texture in a Material Layer Blend
UE - Rendering Architecture - Materials - Mar 14, 2025Some Material Attribute blends in Material Layer Blends can cause Virtual Texture samples to be duplicated in HLSL. This can be avoided by sampling the Virtual Texture in the Parent Material, and pa ...
Creating a GeometryCollectionActor from a GeometryCollectionAsset is ignoring some of the data set in the asset
UE - Simulation - Physics - Mar 13, 2025When you create a GeometryCollectionActor by dragging a GeometryCollectionAsset from the ContentBrowser into the scene, instead of using the PhysicsMaterial defined in the GeometryCollectionAsset, i ...
Importing static mesh while a PIE session is running permanently breaks nanite on the asset
UE - Editor - Content Pipeline - Import and Export - Mar 12, 2025Importing a Static Mesh during PIE can cause it to never enable Nanite, even if it reports that Nanite is enabled. To re-enable Nanite on the mesh, the asset needs to be deleted and imported again ...
[bug] OIT doesn't work correctly with alpha composite blend mode
UE - Graphics Features - Substrate - Mar 4, 2025When using OIT, AlphaComposite Materials blend as if they are using the Translucent BlendMode. The order of macro #if … #elif cases cause AlphaComposite Materials to take the same route as Transluce ...
[Interchange][FBX] Fail to import attributes animation curves with key values as integer
UE - Editor - Content Pipeline - Import and Export - Jan 13, 2025cf[-https://forums.unrealengine.com/t/5-5-not-able-to-import-animation-curves-since-5-3-5-5/2267442/4-] Be carefull there is 2 bugs reported on that Forum and I think they are not related. The firs ...