Unreal Engine Issues

Editor will crash during shutdown while a global Find-in-Blueprint tab is open and indexing is active.

The editor will crash during shutdown if Blueprints are actively being indexed in the background. ...

Child Actor component doesn't properly destroyed on clients.

Creating a new project based on VR template requires user to compile DDC with installed engine

Found that with machines that have not created a project based on this template before that DDC needed to be compiled with an installed engine, while other machines that have created a project with ...

Memory leak when rendering some meshes with ray tracing enabled

This memory leak seems to be caused by the TMemStackAllocator of FRayTracingMeshCommandOneFrameArray. Using the FDefaultAllocator for FRayTracingMeshCommandOneFrameArray works as a workaround. // ...

UnLit materials are not masked out on mobile deferred lighting pass with depth prepass enabled

Creating a Packed Level Instance from an asset with a negative Scale Transform inverts normals

Creating a Packed Level Instance from an asset with a negative Scale Transform inverts normals. Using Create Level Instance will not cause this to occur. ...

SetAllBodiesBelowPhysicsDisabled functionality appears to leave bodies behind that raycasts can still interact with.

From UDN We use SetAllBodiesBelowPhysicsDisabled() to disable some bodies of our Vehicle. However by drawing the disabled bodies' particles position, we found those particles stay where they disab ...

GeometryCollection clustered by ClusteredGroupIndex does not respect child's gravity setup

Following code works as a workaround void FClusterUnionManager::HandleAddOperation(FClusterUnionIndex ClusterIndex, const TArray<FPBDRigidParticleHandle*>& Particles, bool bReleaseClustersFirst) ...

Blueprint Add Custom Event unable to resolve delegate signature inside a split struct

This issue occurs when a static function is created and has a struct parameter that has a delegate exposed to blueprint. When using the helper function in blueprint after having used "Split Struct ...

Pressing the "Show Inactive" button in the material instance editor did not display groups that did not contain the active parameter

When pressing the "Show Inactive" button in the material instance editor, all material parameters are supposed to be displayed in the EditorUI. This is not the case, only some of the parameters are ...