Unreal Engine Issues
Unreal Engine Issues
AStaticMeshActor::CheckForErrors doesn't detect overlapping actors in some circumstances
UE - Simulation - Physics - Mar 14, 2023Licensee reports that overlapping actors not detected when the static mesh pivot doesn't coincide with actual geometry, e.g. between a character's legs. Maybe should do a bounding box check instead ...
OnComponentHit Event is not triggered when hit by a spawned actor with simulate physics enabled for WheeledVehiclePawn with BoxCollison
UE - Simulation - Physics - Feb 20, 2023BoxCollison'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 ...
Typo for Linear Plasticity Type: shirnk instead of shrink
UE - Simulation - Physics - Jan 10, 2023Regression: Tested in UE5/Release-5.0, this issue also occurs so this is not a regression. ...
Trace to complex collision returns incorrect PhysicalMaterial
UE - Simulation - Physics - Dec 15, 2022In ConvertQueryImpactHitImp, MaterialIndex is looked up from InternalFaceIndex, but FTriangleMeshImplicitObject:: MaterialIndices is an array by ExternalFaceIndex, so it returns incorrect material i ...
[CrashReport]UnrealEditor-Chaos!Chaos::FPhysicsSolverBase::GetExternalDataLock_External() [PhysicsSolverBase.h:677]
UE - Simulation - Physics - Nov 29, 2022Generated from CrashReporter ...
When changing the Material of a CompleCollision during PIE, the change is not applied to the PhysicsMaterial.
UE - Simulation - Physics - Nov 24, 2022If changing the material during PIE, the content of the material will be reflected immediately, but the physics material will not. Once the Mesh (Complex Collision Mesh) is cleared and reset, it wil ...
Changed Constraints do not show up when enabling Show Only Modified Properties
UE - Simulation - Physics - Nov 16, 2022This is not a regression. Tested in //UE5/Release-5.0 CL20979098 Changed Constraints on a Static Mesh do not show up when enabling Show Only Modified Properties. ...
SetOneWayInteraction functionality has no effect on the simulation
UE - Simulation - Physics - Nov 11, 2022Calling 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 ...
Geometry Collection Cache Mode recording that has shattered on the ground shows that Collection Freeze when switched to Play and simulating again
UE - Simulation - Physics - Oct 24, 2022Cache Mode: record seems to simulate fine, in Cache Mode: Play, the object does not simulate fracturing Repro Rate: 5/5 ...
StaticMeshComponent occasionally doesn't simulate physics after SpawActor.
UE - Simulation - Physics - Aug 23, 2022When spawning Pawns with a StaticMeshComponent with SimulatePhyscis=True, they occasionally may not simulate physics. This can be reproduced by simply repeating the respawn. The frequency of reprodu ...