Unreal Engine Issues
Unreal Engine Issues
Windows Metal Shader Compiler creates invalid shaders for iOS
UE - Platform - Apple - Feb 23, 2024When installed app is started on device, log will say there's missing or invalid metal shaders ...
Animation Sequences do not display in the viewport while being dragged from content browser under certain conditions
UE - Editor - Content Pipeline - Content Browser - Aug 10, 2016When dragging an instance of an animation sequence out to the level and then back into the content browser and then back out, the preview of the animation disappears. Gif attached below ...
SubwaySequencer crashes when launched in Standalone Game
OLD - Anim - Jan 18, 2017SubwaySequencer is crashing when launching in standalone game Reported here originally:シーケンスの再生に関して ...
Lumen generates gradated shading even if the light is a constant color sky light
UE - Rendering - Graphics Features - Lumen - Jul 22, 2022Lumen generates a gradated shading even if objects are lit by a 360-degree constant sky light.[Link Removed][Link Removed] I looked into this and found that this comes from Spherical Harmonics int ...
UProperty meta ShowOnlyInnerProperties doesn't properly propagate through UStructs
UE - Editor - Verse Class Editor - Oct 30, 2023ShowOnlyInnerProperties does not work when a UStruct is embedded inside another UStruct ...
Point light leaking throught thin geometry
UE - Graphics Features - Oct 29, 2024In 4.27, ray traced point lights can leak through thin meshes. This bug does not exist in Unreal Engine 5, due to many of the potential rendering areas being fundamentally changed. ...
Skeletal Meshes with imported LODs will use the highest LOD when generating Nanite, rather than LOD0
UE - Graphics Features - Nanite - Jan 14, 2025In the SkeletalMeshBuilder, Nanite is generated when enabled regardless of the LOD being requested. Since the Nanite enablement parameter is set on all LODs in USkeletalMesh::BuildLODModel and LODs ...
[Crash] Failed to CreatePipeline on Vulkan ES31 with a special material graph
UE - Rendering - Architecture - RHI - Apr 8, 2025GPULightmass baking issues on AMD
UE - Graphics Features - Jul 28, 2025Volumetric Light Maps are not generated correctly when baked with GPU Lightmass on AMD GPUs. The issue has been reproduced on RX 9070, RX 9070 XT, and RX 7900 XT. ...
Welcome to the Unreal Editor Tutorial refers to World Outliner Panel as the Scene Outliner Panel
Docs - Jul 17, 2017Scene Outliner might be an old name for the World Outliner panel. The hyperlink refers to SceneOutliner, but the heading on the HTML page and the wording on the panel in UE4Editor refer to "World Ou ...