Mouse over doesn't work

Development Programming & Scripting C++
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1

I have this code:

// Fill out your copyright notice in the Description page of Project Settings.

#include "GroundTile.h"
#include "GameFramework/PlayerController.h"

// Sets default values
AGroundTile::AGroundTile()
{
 	// Set this pawn to call Tick() every frame.  You can turn this off to improve performance if you don't need it.
	PrimaryActorTick.bCanEverTick = true;

	// Create the TileMesh component and set it as the root component
	TileMesh = CreateDefaultSubobject<UStaticMeshComponent>(TEXT("TileMesh"));
	RootComponent = TileMesh;


	CollisionBox = CreateDefaultSubobject<UBoxComponent>(TEXT("CollisionBox"));
	CollisionBox->SetupAttachment(TileMesh);

	// Enable mouse over events
	TileMesh->SetGenerateOverlapEvents(true);

	// TODO: Enable mouse click events

	// Bind the mouse over events
	CollisionBox->OnComponentBeginOverlap.AddDynamic(this, &AGroundTile::OnMouseEnter);
	CollisionBox->OnComponentEndOverlap.AddDynamic(this, &AGroundTile::OnMouseLeave);
}

// Called when the game starts or when spawned
void AGroundTile::BeginPlay()
{
	Super::BeginPlay();
	TileMesh->SetMaterial(0, DefaultMaterial);

	APlayerController* PlayerController = GetWorld()->GetFirstPlayerController();
	if (PlayerController)
	{
		PlayerController->bShowMouseCursor = true;
		PlayerController->bEnableClickEvents = true;
		PlayerController->bEnableMouseOverEvents = true;
	}
}

// Called every frame
void AGroundTile::Tick(float DeltaTime)
{
	Super::Tick(DeltaTime);

}

// Called to bind functionality to input
void AGroundTile::SetupPlayerInputComponent(UInputComponent* PlayerInputComponent)
{
	Super::SetupPlayerInputComponent(PlayerInputComponent);

}

void AGroundTile::OnMouseEnter(UPrimitiveComponent* OverlappedComp, AActor* OtherActor, UPrimitiveComponent* OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult& SweepResult)
{
	if (OtherActor && (OtherActor != this) && OtherComp)
	{
		TileMesh->SetMaterial(0, HighlightedMaterial);
	}
}

void AGroundTile::OnMouseLeave(UPrimitiveComponent* OverlappedComp, AActor* OtherActor, UPrimitiveComponent* OtherComp, int32 OtherBodyIndex)
{
	if (OtherActor && (OtherActor != this) && OtherComp)
	{
		TileMesh->SetMaterial(0, DefaultMaterial);
	}
}