UGameplayStatics::SpawnEmitterAttached keeps relative location when SnapToTarget is used.

UGameplayStatics::SpawnEmitterAttached will keep relative position when using SnapToTarget.

1. Create new C++ (First Person or Third Person template) Project, named "AH467216", with Starter Content.
2. Create new C++ Actor class named: MyActor_Ball

   #pragma once
   
   #include "GameFramework/Actor.h"
   #include "MyActor_Ball.generated.h"
   
   UCLASS()
   class AH467216_API AMyActor_Ball : public AActor
   {
   	GENERATED_BODY()
   	
   public:	
   	AMyActor_Ball();
   	
   	UStaticMeshComponent *Mesh;
   	UChildActorComponent *Child;
   	
   	float CurrentParticleSystemSpawnTime;
   	
   	UParticleSystem *Template;
   };
   

   #include "AH467216.h"
   #include "MyActor_Ball.h"
   
   #include "MyActor_BallChild.h"
   
   AMyActor_Ball::AMyActor_Ball()
   {
   	PrimaryActorTick.bCanEverTick = true;
   
   	Mesh = CreateDefaultSubobject<UStaticMeshComponent>( TEXT("Mesh") );
   	Mesh->SetSimulatePhysics( true );
   	SetRootComponent( Mesh );
   
   	Child = CreateDefaultSubobject<UChildActorComponent>( TEXT("Child") );
   	Child->SetChildActorClass( AMyActor_BallChild::StaticClass( ) );
   	Child->SetupAttachment( RootComponent );
   
   	static ConstructorHelpers::FObjectFinder<UStaticMesh> MeshAsset( TEXT("StaticMesh'/Game/StarterContent/Props/MaterialSphere.MaterialSphere'") );
   	if ( MeshAsset.Succeeded( ) )
   	{
   		Mesh->SetStaticMesh( MeshAsset.Object );
   	}
   
   	static ConstructorHelpers::FObjectFinder<UParticleSystem> TemplateAsset( TEXT("ParticleSystem'/Game/StarterContent/Particles/P_Explosion.P_Explosion'") );
   	if( TemplateAsset.Succeeded( ) )
   	{
   		Template = TemplateAsset.Object;
   	}
   }
   
   void AMyActor_Ball::Tick( float DeltaTime )
   {
   	if( Template )
   	{
   		CurrentParticleSystemSpawnTime += DeltaTime;
   		if( CurrentParticleSystemSpawnTime > 3.5f )
   		{
   			UGameplayStatics::SpawnEmitterAttached(Template,Mesh, NAME_None, Mesh->GetComponentLocation( ), Mesh->GetComponentRotation( ), EAttachLocation::SnapToTarget, true );
   			CurrentParticleSystemSpawnTime = 0.f;
   		}
   	}
   	Super::Tick( DeltaTime );
   }
   

3. Compile the game project.
4. Place a MyActor_Ball from the C++ Classes folder into the world.
5. PIE and run into the MyActor_Ball in the world to get it to roll.

RESULT:

When the Particle System is created with SpawnEmitterAttached( ) using SnapToTarget, targeted at the root component, it keeps relative position instead of taking on the location of the root component.

EXPECTED:

SnapToTarget forces position of the Particle System to the target component.

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