EncompassesPoint always returns false on ANavMeshBoundsVolume due to missing BodyInstance

UE - AI - Aug 3, 2025

When calling EncompassesPoint on an ANavMeshBoundsVolume, the method always returns false even if the target point is clearly within the visible volume bounds. This occurs because AVolume::Encompas ...

Crash when changing parent of Material Instance with Layered Materials and viewing Layer Parameters

UE - Rendering - Architecture - Materials - Aug 1, 2025

Reparenting a MaterialInstance that uses Material Layers to another instance with a different layer configuration can cause the editor to crash when opening the Layer Parameters tab. This appears to ...

If any light source is deleted, and a single light has its visibility state changed in LightMixer, all the other lights in the scene that were invisible turn visible

UE - Virtual Production - Tools - Jul 31, 2025

If any light source is deleted, and a single light has its visibility state changed in LightMixer, all the other lights in the scene that were invisible turn visible. The behavior only shows after d ...

The LightMixer window is making all scene lights visible once you toggle the visibility of a single light

UE - Virtual Production - Tools - Jul 31, 2025

The LightMixer window is making all scene lights visible once you toggle a single light as visible. Any light source (except SkyLight) will be turn visible once a single light is made visible using ...

ULocalPlayerSaveGame::IsSaveInProgress always returns true after a save completes

UE - Framework - Jul 31, 2025

ULocalPlayerSaveGame::IsSaveInProgress always returns true after the first save is requested. This is due to the return statement checking if either an error has yet to be reported or a success has ...

Destroying a welded actor is causing an Array index out of bounds crash on 5.6

UE - Runtime - Simulation - Jul 30, 2025

Destroying a welded actor is causing an Array index out of bounds crash on 5.6. The licensee has provided a repro project that reliably causes a crash whenever the spawned actor is destroyed. There ...

The CTRL+S shortcut does not save an opened Sequence it the Sequencer Window is undocked

UE - Anim - Sequencer - Jul 29, 2025

The CTRL+S shortcut does not save an opened Sequence it the Sequencer Window is undocked. Docking the Sequencer Window to the main window fixes the issue. I've reproduced the behavior on UE versions ...

Hardware Raytracing on Lumen can cause a crash on AMD Radeon GPUs

UE - Rendering - Graphics Features - Lumen - Jul 29, 2025

Hardware Raytracing support can cause a crash on AMD Radeon GPUs when creating the RT pipeline state. ...

Player collision display not accurate with DirectX12 enabled

UE - Rendering - Graphics Features - Nanite - Jul 24, 2025

Nanite Landscapes in Non world partition maps has missing sections

UE - Graphics Tools - Terrain - Landscape - Jul 23, 2025

Nanite in non world partition worlds builds with missing section, almost half the landscape is missing. Looking at the nanite overdraw as attached, it shows an interesting pattern. ...