Unreal Engine Issues
Unreal Engine Issues
Niagara Position Mode Unset results in World Space rather than Local Space
UE - Niagara - Scripting - Apr 16, 2025When an emitter's Position Mode is Unset, the particles spawn in World Space 0,0,0. This is unexpected. If the Position Mode is Unset in 5.4, the particles remain in Local Space, which is the inten ...
Dataprep crash
UE - Editor - Content Pipeline - Visual Dataprep - Apr 16, 2025This question was created in reference to: [Link Removed] Last post fixed the import crash, but it seems it added another. If we hit Execute button twice in a row by mistake we get a crash with th ...
Bake Transform not working properly in DataPrep
UE - Editor - Content Pipeline - Visual Dataprep - Apr 16, 2025When I use my dataprep recipe I'm seeing something strange. The Bake Transform node seems to be stripping the transform instead of applying it. I have this in dataprep: https://udn.unrealengine.c ...
Anisotropy of material looks different when set via a scalar parameter node connected to the material node
UE - Graphics Tools - Texturing Tools - Apr 15, 2025The Anisotropy of a material looks different when set on the material output node vs when set via a scalar parameter node connected to the material node ...
Navigation mesh is generated ignoring collision for ISM added by construction script
UE - AI - Navigation - Apr 15, 2025When opening a map with ISM in place, NavOctree is not updated because the ISM bounds are assumed invalid and the geometry is not taken into account in the navmesh build. The following log output i ...
Calling UBlueprintMapLibrary::GenericMap_Find with a non-existent key causes a memory leak
UE - Framework - Blueprint - Apr 15, 2025When Calling UBlueprintMapLibrary::GenericMap_Find with a non-existent key, the function construct the default structure in-place on the given pointer without destroying the object. This behavior ca ...
FName no longer equals FName_None when constructed with a trailing underscore and digits in range of 1-9
UE - CoreTech - Apr 15, 2025When an FName is created with a trailing underscore and any number of digits in the range of 1-9 the trailing digits are used as the internal number value for the FName lookup. This results in the F ...
Inconsistent parameter handling for pak/iostore block size / patch padding
UE - CoreTech - IoStore - Apr 14, 2025Users have trouble overriding the blocksize/patchpaddingalign parameters for UnrealPak from UAT commandlines.There is no easy way to specify these parameters through a buildcookrun, instead they n ...
Landscape raytracing geometry always updates every frame
UE - Graphics Features - Ray Tracing - Apr 11, 2025LOD 0 Landscape meshes are always updated in FLandscapeComponentSceneProxy::GetDynamicRayTracingInstances because* r.RayTracing.Geometry.Landscape.LODsUpdateEveryFrame* (GLandscapeRayTracingGeometry ...