Unreal Engine Issues
Unreal Engine Issues
Skeleton retarget settings are lost when importing/reimporting a mesh with bone hierarchy changes
UE - Editor - Content Pipeline - Import and Export - Sep 30, 2025Importing a mesh that changes the hierarchy of a related skeleton causes the animation retarget settings on the skeleton to be lost. This is because in UInterchangeSkeletalMeshFactory::EndImportAss ...
Rendered panoramas using Lumen may be overexposed
TM - Rendering - Sep 30, 2025Reported in SF [Link Removed] Lumen Panorama renders in 2025.2 may appear overexposed compared to the viewport, or when comparing the same render produced in 2025.1.1 This only appears to occur wi ...
Wrong density calculation in UBodySetup::CalculateMass
UE - Simulation - Core - Sep 29, 2025Wrong density calculation in UBodySetup::CalculateMass. The licensee has provided the following analysis and suggested fix: In UBodySetup::CalculateMass, the following code is present: // physical ...
Division by zero in FAnimNode_StrideWarping::EvaluateSkeletalControl_AnyThread
UE - Anim - Gameplay - Sep 29, 2025When an Actor's CustomTimeDilation is 0.0, functions FActorTickFunction::ExecuteTick() and FActorComponentTickFunction::ExecuteTickHelper() will call AActor::TickActor() and UActorComponent::TickCom ...
Virtual texture fallback displays in incorrect color space on mobile platform (VT:OFF) Preview
UE - Platform - Mobile - Sep 28, 2025Loading error for editor only BlueprintNativeEvent functions
UE - Framework - Blueprint Compiler - Sep 26, 2025The editor-only function in the native parent class is not compiled in the game module, which is why we're getting this error. The Blueprint compiler should follow suit during cooking and not genera ...
Custom Depth range is different than Pixel Depth range
UE - Graphics Features - Sep 25, 2025Shaders that compare custom depth and pixel depth get wrong output values because the ranges are different. This error is most noticeable over large distances. The difference in ranges is due to t ...
[Mobile/Forward Rendering] PlanarReflection does not work when the reflection plane faces certain directions
UE - Platform - Mobile - Sep 24, 2025Note: This repros on 4.27 and all 5.x versions. When using the mobile renderer and/or forward shading, Planar Reflection will simply not work if the reflection plane normal has components that add ...
Datasmith Archicad - Transform will not resync properly when modifying roof thickness and transforms
TM - Interoperability - Sep 24, 2025Reported in SF [Link Removed] With Datasmith Direct Link from Archicad, when adjusting the roof thickness for an imported roof any adjustments to the transform of the roof will not update on resync ...