Unreal Engine Issues

ChaosCacheManager is not recording the Observed GeometryCollections NotifyBreak states between level loading and will default to false if changed from Record to Play

ChaosCacheManager (CCM) is not recording the Observed GeometryCollections (GC) NotifyBreak states between level loading and will default to false if changed from Record to Play. AChaosCacheManager ...

OnComponentWake Event does not trigger when the physical body is awoken by a Force

OnComponentWake Event does not trigger when the physical body is awoken by a Force. The steps described on Steps To Reproduce is enough to replicate this behavior. The OnComponentWake event is only ...

UnregisterAsyncPhysicsTickActor not being called when actors end play via UWorld::RemoveFromWorld

A GeometryCollection that was broken and is going through shrinking will reset the size of its particles if a second level is broken

Might relate to issue [Link Removed] - "The Remove-On-Break feature, set on Fracture Mode on Geometry Collections, stops shrinking and shows strange behaviors" The added information on this particu ...

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) ...

SetOneWayInteraction functionality has no effect on the simulation

Calling SetOneWayInteraction on a BodyInstance has no effect within the physics engine. The state of the flag is passed in to Chaos but nothing actually uses the value once it is there. It is expe ...

Editor becomes unresponsive/freezes when a Geometry Collection is destroyed by a Hit Event while simulating

This is a regression. Tested in //UE5/Release-5.1 CL23901901 When a geometry collection is destroyed by an On Hit event the editor becomes unresponsive and never recovers. No crash is generated. ...

Replicating a non-root component with simulate physics enabled causes the component to be in the wrong place on spawn, on clients.

When a BP spawns another, if the spawned Actor has a non-root child component that is simulating physics, on clients, immediately after spawn, the child component will have the world position double ...

OnComponentHit Event is not triggered when hit by a spawned actor with simulate physics enabled for WheeledVehiclePawn with BoxCollison

BoxCollison's OnComponentHit event is not triggered when BoxCollison hits a spawned actor with simulate physics enabled. The event is triggered if the same actor has been placed in the level beforeh ...

ChaosCacheManager is not properly recording the state of each particle when toggling Fields and Anchor Fields in the scene.

ChaosCacheManager is not properly recording the state of each particle when toggling Fields and Anchor Fields in the scene. During my investigations I've noticed that ChaosCacheManager does not reco ...