Unreal Engine Issues
Unreal Engine Issues
ParticlePosition doesn't use Previous values
UE - Niagara - Jan 9, 2024FHLSLMaterialTranslator::ParticlePosition does not return Previous information when request which can result in bad motion vector calculation. ...
Roughness/Reflectivity difference between eyes on OSVR
UE - Platform - XR - May 6, 2016Found on: //UE4/Dev-VR CL-2967563 The displays in QA-PostProcessing are rendering differently in each eye on the OSVR, it looks like one is more reflective (or perhaps less rough?) than the other. ...
Buffer Visualization for DecalMask is missing
UE - Graphics Features - Feb 29, 2016The Buffer Visualization for DecalMask is no longer an option. Also, when looking at the Buffer Visualization Overview the DecalMask slot has been removed. See attached image for comparison Worke ...
Utility functions in UEdGraph_ReferenceViewer are no longer exposed
UE - Editor - Content Pipeline - Content Browser - Oct 29, 2018A number of utility functions are provided in UEdGraph_ReferenceViewer for building menu extenders. This class was originally included in the engine as part of the ReferenceViewer module, but was re ...
Visual Studio outputs ? symbols in place of Cyrillic for some messages related to UBT when compiling engine source
UE - Foundation - Cpp Tools - UnrealBuildTool - Apr 25, 2016An answerhub user reported a problem with compiling source on a Russian version of windows where messages related to UBT will output ? symbols in the place of Cyrillic characters in Visual Studio's ...
Ray traced shadow sample settings greater than 1 cause shadow artifacts
UE - Graphics Features - Lumen - Sep 23, 2020Alternative you can follow these steps to reproduce 1. Create a new project with ray tracing enabled 2. Activate the groom plugins 3. Import a groom asset into the scene 4. Add any light type to the ...
Mover MoveDirectionIntent can be 0 due to interpolation
UE - Gameplay - Player Movement - Apr 22, 2025If two states have MoveDirectionIntent vectors that are opposite to each other, interpolating between these states can result in MoveDirectionIntent being 0. This may cause issues for animation blue ...
Compile errors when building full solution for Development Win64
UE - Foundation - Cpp Tools - UnrealBuildTool - Sep 29, 2015Per email conversation, entering this in as a single bug ...
Blueprint inherited from StaticMeshActor will fail to compile if StaticMesh is NULL
UE - Gameplay - Blueprint - Jan 10, 2019Some developers reporting incorrect Preview in VR resolution for Steam VR
UE - Platform - XR - Aug 18, 2020VR Preview Window is the wrong resolution, just showing the top left portion of the entire view. Somewhat similar symptoms to -[Link Removed]-, not exactly the same though. This issue has not be ...