Crash if the setting of PhysicalAnimationComponent is changed in the same frame as teleport processing

Physics - Apr 24, 2020

Crash when ApplyPhysicalAnimationProfileBelow node and UPhysicalAnimationComponent :: UpdateTargetActors by UPhysicalAnimationComponent :: OnTeleport run in the same frame. Because RuntimeInstanceDa ...

AddForce behaves inconsistently between PIE and Standalone Game / Build

Physics - Apr 23, 2020

This example consists of a simple BP Actor, containing a Collision Sphere and Static Mesh (Sphere). The BP has Simulate Physics Ticked on, the Mass in KG is 1 and collision preset is set to Block Al ...

UProceduralMeshComponent::UpdateMeshSection does not call UProceduralMeshComponent::UpdateCollision

Physics - Apr 20, 2020

Updating a procedural mesh results in an incomplete collision update. Collision bounds appear to get updated properly, but collision data is not updated, despite a navigation rebuild being triggered ...

Engine Crashes On Scene Close When An Actor Is Spawned With Templated FActorSpawnParameters

Physics - Mar 5, 2020

When an actor is spawned with Spawn Parameters that are templated the engine crashes when closing a scene. This wasn't happening when there wasn't a physics constraint on the spawned blueprint. Thi ...

CollisionPreset of ComplexCollisionMesh is overrided by Drawing mesh settings

Physics - Mar 3, 2020

When setting ComplexCollisionMesh of StaticMesh asset, CollisionPreset that is actually applied becomes the setting on the drawing mesh side. It seems that ComplexCollisionMesh is not considered in ...

Niagara and Groom causes exception crash on Launch when using

Physics - Mar 2, 2020

Trying a Launch after every step shows that the problem occurs as soon as the GroomAssetSystem is added to Niagara. If the GroomAssetSystem is removed, the game launches fine (but the hair doesn't m ...

Crash when using ComplexCollisionMesh and the ComplexCollisionMesh has more material index than drawing mesh's material index

Physics - Mar 2, 2020

When using ComplexCollisionMesh of StaticMesh asset, at the time of hit, the physical material refers to the material of the drawing mesh side using the material index of the collision mesh side. T ...

The Gradient Paint Tool In Cloth Simulation Doesn't Work On Mac

Physics - Feb 28, 2020

The Gradient Tool rotates the camera on Mac instead of painting the Gradient End Value. I wasn't able to test in Main on a Mac. There were no issues on Windows in 4.23.1, 4.24.3 and 4.26 Main. Foun ...