Unreal Engine Issues
Unreal Engine Issues
Material picking of Nanite meshes with multiple sections not working
UE - Rendering - Graphics Features - Nanite - Nov 24, 2025Picking a material of a section of a Nanite enabled mesh will not work correctly, while the same picking logic works fine for non-Nanite meshes. On Nanite meshes, the reported section index seems to ...
[AI] Unable to bind to parameter properties when using a Soft Object Reference
UE - AI - StateTree - Nov 21, 2025Global parameters disappear from the binding list when a soft object reference is present. Pulling up the binding menu shows nothing for Parameters when there are only object references in the ST as ...
same PhysicsAsset refresh multi times when modify multi SkeletalBodySetup properties in same PhysAsset
UE - Simulation - Gameplay - Nov 20, 2025USkeletalBodySetup::PostEditChangeProperty will call OwningPhysAsset->RefreshPhysicsAssetChange(), if I modify many SkeletalBodySetup properties in same PhysAsset, will cause call OwningPhysAsset-> ...
[AI] SmartObjectPersistentCollection produces errors during Map Validation
UE - AI - SmartObject - Nov 18, 2025SmartObjectPersistentCollection in 5.6 and later now give errors when the map validator runs due to referencing spatially loaded actors. This was working per licensee in 5.5. There was a change from ...
Control Rig Box Selection Innacurate
UE - Anim - Rigging - Control Rig - Nov 17, 2025When useing marquee select on controls in the rig, their on screen size determines how likely they are to be included in the selection which isn't a reliable enough method for animators. Our workaro ...
Geometry Collections built with "Use Root Proxies" rendering/transform positions ignore the original root node rotation and can lead to unexpected behaviors
UE - Simulation - Visual - Nov 17, 2025Geometry Collections (GC) built with "Use Root Proxies" rendering/transform positions ignore the original root node rotation and can lead to unexpected behaviors. If the root node of the GC was rot ...
Missing UV Clamping or Clear in SunAlphaPS_Mobile
UE - Platform - Mobile - Nov 13, 2025In: void SunAlphaPS_Mobile( float2 InUVs[8] : TEXCOORD0, in FStereoPSInput StereoInput, out HALF_TYPE OutColor : SV_Target0 ) { OutColor = SunUnBias(SunShaftAndDofTexture.Sample(SunShaftAndDo ...
Mutable bake instance overwrite instead increments
UE - Anim - Mutable - Nov 13, 2025We are using Mutable and right now we can't overwrite already baked SK instances. This occurs when, we have a set variation for a character and we address a feedback on one of the used skeletal mesh ...
Ensure triggered inside Range Struct Customization when Property Node is no longer valid (e.g. when editing FFloatRange while FRuntimeFloatCurve editor is visible) [Ref. UE-341339]
UE - Editor - Workflow Systems - Nov 12, 2025[Link Removed] Closed was fixed by CL 46990575, successfully avoiding an ensure condition inside FIntervalStructCustomization::S ...
Build crash when enabling r.CreateShadersOnLoad=1
UE - Rendering - Architecture - Shaders - Nov 10, 2025When "r.CreateShadersOnLoad" is enabled, cooking will crash due to failure to create a shader. This occurs on //UE5/Release-5.5, CL: 41545209 and //UE5/Release-5.6, CL: 45232827 ...