Crash when moving map assets used as level instances

UE - Engine Scaling - Streaming - Level Instances - Mar 10, 2025

Crash trying to convert skeletal mesh to Nanite

UE - Rendering - Features - Nanite - Mar 6, 2025

In SkeletalRenderNanite.cpp / FDynamicSkelMeshObjectDataNanite::UpdateBonesRemovedByLOD, bone indices are of type FBoneIndexType (defined as uint16 from BoneIndices.h), instead of int32. On line 18 ...

FRayTracingGeometryManager::Tick() called twice during a single frame

UE - Rendering - Features - Ray Tracing - Mar 5, 2025

UDN licensee Prophecy Games has encountered an issue in which the RaytracingGeometry::Tick() function is called twice during a single frame. This causes an assert to trigger, which blocks them from ...

Camera Animation imported through Sequencer with FBX sometimes loses rotation fidelity

zComponent - Archive - Feb 28, 2025

FBX attached[Link Removed] ...

Regression: Several project settings, especially from built-in Plugins, are being silently erased when previously they were not, which is perceived as a bug

UE - Core - Systems - Feb 28, 2025

In UE's Project Settings, some pages are saved automatically to the project's "Config/Default<CATEGORY>.ini" file (meant to be version-controlled) on every change. Other pages have buttons "Set as D ...

Chaos Modular Vehicles Examples desynchronizes easily

UE - Runtime - Character - Feb 27, 2025

Chaos Modular Vehicles Examples does not replicate properly and it's easy to reach a state of desynchronization where the state stops being replicated and position/rotation of cars mismatch. As an ...

Resolution retrieval issues caused by multi-monitor hot-swapping.

UE - Rendering - RHI - Feb 24, 2025

I looked into the underlying code, and it seems that this situation is not well handled. One possible solution is to trigger EnumAdapters() when the system fires the WM_DISPLAYCHANGE message. This ...

MaxDrawDistance set by CullDistanceVolume is lost on saving sublevel

UE - Engine Scaling - Streaming - Feb 21, 2025

The UpdateCullDistanceVolumes behavior when saving was changed by CL-36588597. Only CullDistanceVolumes in the same sublevel can affect Max Draw Distance. ...

Missing Triangles on scaled MetaHuman assets with Nanite enabled

UE - Rendering - Features - Nanite - Feb 19, 2025

Additional information: only happens when all three conditions are true: the camera is very close to the character, the MH is Nanite, and a scaled mocap animation is appliedmaterial is opaque, shows ...