Unreal Engine Issues
Unreal Engine Issues
Materials with transparency still visible in alpha with holdout in Render layers.
TM - Tools - Mar 8, 2024The Transparent materials like the Glass don't behave correctly in Raster (in PT is working as expected). They are visible in Alpha with Holdout. This is an Engine limitation for now. But we sho ...
External Actors can hold stale references to Blueprint classes as edited instance properties
UE - Engine Scaling - Streaming - Nov 14, 2024When a component is removed from a class that exists as an instance with external actors enabled, a deleted BP component on an actor will remain referenced by the instance. Disabling External Actor ...
The "Make Static Mesh" feature for skeletal meshes does not account for disabled mesh sections.
UE - Runtime - Deformable - Dec 11, 2024The licensee was not able to make static meshes with the correctly disabled sections from a skeletal mesh in the current implementation of the "Make Static Mesh" button in the editor. They have prov ...
Nanite mesh not culled when owner is editor only actor in gameview
UE - Rendering - Features - Nanite - Mar 29, 2024Nanite mesh is not culled because "DrawInGame" value in the primitive uniform buffer is always 1. Can be fixed with below modification:// in FPrimitiveSceneProxy::FPrimitiveSceneProxy DrawInGa ...
UInstancedStaticMeshComponent::AddInstances does not appear to be adding per-instance previous transforms when enabled
UE - Rendering - Features - Dec 3, 2025Instanced static mesh component does not add instances transforms to PerInstancePrevTransform array when using UInstancedStaticMeshComponent::AddInstances. Additionally Updating the transforms of th ...
Building lighting fails on Linux
UE - Platform - Linux - Jan 15, 2016When building lighting on Linux, the build process fails because UnrealLightmass cannot find the library libUnrealLightmass-Serialization.so. Reported using Mint Cinnamon 17.3 Internal machine uses ...
Translating bones in Persona is not affected by Snap Options
OLD - Anim - Dec 14, 2016In Persona, moving a socket around is not affected by any changes to snapping (scale or size). Rotation is affected however. This is similar to [Link Removed], but according to James Golding there ...
Deactivated Skeletal Mesh Component Plays Animation
UE - Gameplay - Components - Aug 15, 2017Animations on skeletal mesh components set to use an animation asset still play even when the component is deactivated. Found: 4.17 Reproduced: 4.16.3 & 4.18 Main CL# 3585944 ...
Unable to summon Preview Scene Settings from Viewport menu
OLD - Anim - Sep 15, 2017REGRESSION: Yes, does not occur in 4.17.2 User is not able to summon Preview Scene Settings from the Viewport Menu. Still works if the user selects it from the Window > Preview Scene Settings opti ...
Crash closing Parent and Child blueprint after renaming variable
UE - Gameplay - Blueprint - Oct 4, 2017REGRESSION Uncertain, was not able to repro in 4.17 with these steps. But I also can't repro with another version of QAGame in Binary editor. Crash occurs when the user closes a parent and child b ...