ARKit - Handheld AR Template Experiences Periodic Hitches when Quick Launched

UE - Platform - Mobile - Jan 14, 2025

Reproduced 3/3 times. Regression testing in progress. Issue was reproduced on both Windows and MacOS launching onto iOS. Issue does not reproduce when packaging and installing an .ipa app. ...

Water body actor casts static shadow

UE - Content Tools - Terrain - Water - Jan 14, 2025

WaterBody Actors will cast static shadows in built lighting even if their Cast Shadow options are disabled. ...

Undoing Replace Actor on Level Instances do not reload the Level Instance

UE - World Creation - Worldbuilding Tools - Level Instances - Jan 14, 2025

Undoing Replace Actor on a Level Instance does not properly reload the previous Level Instance. ...

Nanite Skeletal Mesh uses incorrect LOD for raytracing

UE - Graphics Features - Nanite - Jan 13, 2025

LOD0 for some Nanite Skeletal meshes is used for ray tracing scenes on some platforms  because some FSkinnedSceneProxy are incorrectly considered "always visible" ...

GPU Crash from invalid SRV in CreateShaderResourceView due to integer underflow

UE - Graphics Features - Ray Tracing - Jan 13, 2025

The GPU crashes after the ray tracing geometry builder attempts to create a shader resource view with an invalid offset. ...

Building Geometry Stops UTickableWorldSubsystem Ticking

UE - Content Tools - Jan 13, 2025

Can be mitigated by reopening the Level. There is a repro project provided by the licensee on the case ticket. ...

NetUpdateFrequency Affected by Global Time Dilation

UE - Networking - Jan 13, 2025

Changing the global time dilation in a multiplayer game affects the rate at which actors are considered for replication, and setting it to 0 will even cause replication to stop entirely (unless the ...

GAS: GameplayDebugger crashes when AttributeSet has different rep conditions per attribute

UE - Gameplay - Gameplay Ability System - Jan 10, 2025

When using the GameplayDebugger to show GAS debug info, and an AttributeSet has two replicated attributes with different replication conditions, a crash occurs in RegisterReplicatedLifetimeProperty( ...

Recast: FindDistanceToWall can return incorrect results on shared edges with Excluded Nav Area

UE - AI - Navigation - Jan 10, 2025

Context ARecastNavMesh::FindDistanceToWall can be used to find the closest 'wall' on a nav mesh, given a queried position. A wall can be:any boundary towards the end of the nav mesh (outer rectangl ...

Substrate Add node only adds the first Substrate Slab's Emissive value when "Use Parameter Blending" is enabled

UE - Graphics Features - Substrate - Jan 10, 2025

As per the steps to reproduce, the Substrate Add node only adds the first Substrate Slab's Emissive value when "Use Parameter Blending" is enabled. Leaving "Use Parameter Blending" unchecked on the ...