When changing the Material of a CompleCollision during PIE, the change is not applied to the PhysicsMaterial.

UE - Simulation - Physics - Nov 24, 2022

If 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, 2022

This 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. ...

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, 2022

Cache 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, 2022

When 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 ...

Physical Material Masks do not work in non-editor builds

UE - Simulation - Physics - Aug 12, 2022

Physical material masks are not working as expected in cooked builds. Licensee reports that the mask data is empty at runtime. ...

Collision filtering issue when multiple shapes on an actor

UE - Simulation - Physics - Jul 22, 2022

Collision filtering is producing unexpected results in certain setup. Objects are passing through one another when they are expected to collide. ...

Vehicle tire forces applied too high

UE - Simulation - Physics - Jul 22, 2022

Vehicle wheel friction values are applied too high relative to the vehicle centre of mass.  They are applied at the wheels original rest position rather than the base of the current wheel location. ...

Physics Constraint returns incorrect values for Swing1, Swing2, and Twist

UE - Simulation - Physics - Jul 7, 2022

Tested in //UE5/Main CL#20966071 Tested in //UE4/Release-4.27 CL#18319896 Physics Constraint returns incorrect values for Swing1, Swing2, and Twist. ...

Physical Material Mask does not appear in the Material Instance Editor

UE - Simulation - Physics - Jun 29, 2022

Although MaterialInstanceConstant has a physical material mask and physical material mask map property, these properties does not appear in the Material Instance Editor's details panel. ...

Add World Rotation applied to a Static Mesh simulating physics behaves erratically 

UE - Simulation - Physics - Jun 28, 2022

This is a regression. Tested in //UE4/Release-4.27 CL18319896 Add World Rotation applied to a Static Mesh simulating physics behaves erratically. ...