Ghosting effect of fast moving objects in Lumen

UE - Graphics Features - Lumen - Oct 15, 2024

In Standalone mode, when reading world partition actor descriptors for BP actors, "bIsSpatiallyLoaded" receives its value from the native base class instead of the BP class, so BP actors are loaded/unloaded based on the wrong condition.

UE - World Creation - Worldbuilding Tools - World Partition - Oct 15, 2024

Consider an actor defined in C++ with "bIsSpatiallyLoaded" set to true (the default), and a derived blueprint that overrides "bIsSpatiallyLoaded" to false. Now consider an actor instance of that blu ...

The Remove-On-Break feature, set on Fracture Mode on Geometry Collections, stops shrinking and shows strange behaviors

UE - Simulation - Physics - Destruction - Oct 15, 2024

The Remove-On-Break (ROB) feature, set on Fracture Mode on Geometry Collections (GC), was supposed to make the particle shrink until it vanishes. When the GC goes to sleep the shrinking stops and sh ...

Decal normals causes underlying shadow masks to become visible

UE - Graphics Features - Oct 14, 2024

When using a Translucent or Modulate blend mode decal, the underlying shadow may become visible with VSMs, RT Shadows, and with the Pathtracer. When no normal is applied and a sphere is used to tes ...

Level Instance desaturation effect does not respect occlusion when the selected object is occluded by a Nanite mesh

UE - Graphics Features - Nanite - Oct 14, 2024

When selecting an asset in a level instance that is being edited via LevelInstance/Edit, the silhouette of the object is visible through occluding nanite meshes. This has the effect of disabling th ...

iOS package with Metal Desktop Renderer enabled crashes on iPhone

UE - Rendering Architecture - RHI - Oct 11, 2024

iOS package with Metal Desktop Renderer enabled crashes on iPhoneThis issue does not occur if Metal Desktop Renderer is disabled ...

CharacterMovement doesn't clear velocity

UE - Simulation - Physics - Oct 11, 2024

Velocities are not being cleared when physics simulation set to false.  ...

World is initialized twice when opened through the Content Browser

UE - World Creation - Worldbuilding Tools - Oct 10, 2024

When opening a Level from the Content Browser, the world gets initialized twice. This initialization process can be quite long, especially for big world using world partition. There doesn't seem to ...

Incorrect display of NavLinks when bFailedNavLinks is enabled

UE - AI - Navigation - Oct 10, 2024

When bFailedNavLinkNavLink is enabled in RecastNavmesh, some NavLink points are debugged and others are not depending on the position of the NavLink point. In the sample project, enable bFailedNavL ...

[Interchange] mesh outside LODs hierarchy are added to only lod 0 it should be added to all lods

UE - Editor - Content Pipeline - Import and Export - Oct 9, 2024