Unreal Engine Issues
Unreal Engine Issues
Flickering artifacts are rendered when using Sky Atmosphere Component with Vulkan
UE - Rendering - Architecture - RHI - Jul 16, 2020Rendering the SkyAtmopshere component using Vulkan with and without Vulkan (SM5) enabled causes artifacts to appear on screen on Windows and Linux. This was reported and tested in 4.25.1 (CL-135 ...
Keyboard shortcuts lists Edit Asset twice
UE - Editor - May 28, 2021Edit Asset is listed twice in the Keyboard Shortcuts for Editor Preferences This issue is occurring in //UE5/Release-5.0-EarlyAccess Binary CL 16433597 This issue is occurring in //UE4/Release-4 ...
Nanite meshes swap materials during simulation
Quixel - Jun 1, 2021When enabling nanite on Quixel Bridge assests. Materials sometimes randomize to other assets in the viewport during simulation or PIE. This does not occur every time and may take a few tries. T ...
MoviePipeline: Can't inherit from UMoviePipelineSetting in BP due to PURE_VIRTUAL
zComponent - Archive - Oct 28, 2021IsValidOnMaster/IsValidOnShot need to be BlueprintNativeEvents with a default C++ implementation and allow derived classes to override the function. This is needed so that you can create custom set ...
EditorCube added to the scene with a Geometry Script will have reversed normals
UE - Graphics Tools - Modeling Tools - GeometryScripting - May 31, 2023The work around is to use the modeling mode normal tool to regenerate normals. This appears to mainly occur on any cubes added by the "Copy Mesh from Static Mesh" Regression tested in 5.0.3 at CL 2 ...
ExportMaterialUVDensities() gets the incorrect value where the alpha channel is referenced
UE - Rendering - Architecture - Materials - Apr 16, 2024ExportMaterialUVDensities() gets the incorrect value where the alpha channel is referenced (e.g. RegisterIndex of the texture is [3] or [7]) because FMeshRenderer::RenderMaterialTexCoordScales() use ...
Spawn Actors At Location within Dataprep Asset does not specify asset when selecting one from the drop down
UE - Editor - Open File Formats - Visual Dataprep - Oct 10, 20233/3 Set Regression to no as this issue is still occurring within //UE5/Main-Release-5.3 @ CL 28051148 Halo testing was performed on other cards within the Dataprep library to see if this issue was ...
Ocean spline impacting landscape way outside of its bounds
UE - Graphics Tools - Terrain - Water - Oct 4, 2024From licensee: "[...] it seems that regardless of our settings and how far away the control spline is from the landscape edge, one corner of the landscape will always be impacted by the falloff and ...
Landscape Layer Blending Painting Issue
UE - Graphics Tools - Terrain - Sep 10, 2025There are two issues when painting landscape layers.Paint: When painting between different layers, square-shaped artifacts or splotches appear.Fill Layer: The blended weights of other layers aren't ...
It is not possible to export virtual layer masks (AI or from mesh) through the COLMAP exporter.
RS - MVS - Jan 8, 2026Found in 2.1.0.119011 (R210). The mask export doesn't work even when the masks are regenerated from the mesh. Outcome: Error appears: "The filename, directory, or volume label syntax is incorrect ...