Crash in FShadowSceneRenderer::AddDirectionalLightShadow

UE - Graphics Features - Shadows - Jun 2, 2025

This is a race condition between the FShadowScene update & rendering, where sometimes the renderer tries to access a data array before it has been populated leading to the crash. It happens fairly r ...

StructUtils plugin's `FInstancedStruct` in a CPP-defined struct in a `TArray` on an actor component defined in CPP and implemented in BP. Populating the instanced struct in an actor BP's class defaults breaks serialization of the class defaults.

UE - AI - May 30, 2025

Context Instanced structs are great for holding simple data with the main advantage they have is a low memory overhead unlike instanced objects. Problem The problem is in StructUtils plugin's `FIns ...

Crash in UPCGComponent::CleanupLocalImmediate(bool,bool) on file load

TM - Rendering - May 30, 2025

Reported in SF [Link Removed] User has a file that will crash at launch consistently. Crash report indicates the problem is with PCG content inside the file. ...

PlayerCameraManager->OnBlendComplete() delegate not getting called

UE - Gameplay - Gameplay Cameras - May 29, 2025

The PlayerCameraManager->OnBlendComplete() delegate is not getting called when running a game in a standalone network mode without any networking. ...

Enabling Wireframe Mode along with HDR (EyeAdaptation) Visualization crashes the Editor

UE - Graphics Features - May 29, 2025

In the Viewport, enabling Wireframe Mode (ALT+2) along with HDR (EyeAdaptation) Visualization crashes the Editor. I've tested different versions and this issue is not present on 5.0, but it reproduc ...

Runing PlayInEditor with NetMode PlayAsClient and a LevelSequence that AutoPlays in the level and is also opened in Sequencer leads to a Fatal world leak crash on 5.5 and up

UE - Anim - Sequencer - May 28, 2025

Runing PlayInEditor with NetMode PlayAsClient, a LevelSequence that AutoPlays in the level, contains a Spawnable BP_ThirdPersonCharacter with an animation, and is also opened in Sequencer, leads to ...

PlayMontages can break after binding an actor with an AnimInstance inside a LevelSeuqence.

UE - Anim - Sequencer - May 28, 2025

When an Animation Sequence is overridden by a LevelSequence, and later reverts to its original animation state, the AnimInstance fails to properly reinitialize. This prevents subsequent animation lo ...

Crash when two textures reference eachother as composite textures

UE - Texture - May 28, 2025

When (unintentionally) trying to set one texture as the composite texture of another, which itself is the composite texture of the first, a stack overflow occurs leading to a crash: in UTexture::Pos ...

Scene with texture collection crashes when dumping a full memreport

UE - Rendering Architecture - RHI - May 28, 2025

A licensee has reported that generating a full memreport of a packaged project which uses a texture collection leads to a crash. ...

Unexpected Collision Response When Nesting Primitive Components with auto-weld enabled and physics disabled on children. The root primitive falls through floor even though it is set to block all.

UE - Simulation - Physics - May 27, 2025

Context Auto-weld makes it so if a child is attached to a parent, the two bodies will be joined into a single rigid body. Physic settings like collision profile and body settings are determined by t ...