Collection view reload data only reloading items once each...

gistfile1.txt

import UIKit

class MyCollectionViewCell: UICollectionViewCell {
	let label: UILabel = UILabel()

	override init(frame: CGRect) {
		super.init(frame: frame)

		contentView.addSubview(label)

		label.translatesAutoresizingMaskIntoConstraints = false
		label.centerYAnchor.constraint(equalTo: contentView.centerYAnchor).isActive = true
		label.centerXAnchor.constraint(equalTo: contentView.centerXAnchor).isActive = true
	}

	required init?(coder: NSCoder) {
		fatalError("init(coder:) has not been implemented")
	}
}

class ViewController: UIViewController, UICollectionViewDelegate, UICollectionViewDataSource {

	let items: [Int] = Array(1...10)
	@IBOutlet weak var collectionView: UICollectionView!

	override func viewDidLoad() {
		super.viewDidLoad()
		// Do any additional setup after loading the view.
		collectionView.register(MyCollectionViewCell.self, forCellWithReuseIdentifier: "cell")

		navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .refresh, target: self, action: #selector(reload))
	}

	@objc func reload() {
		print("Reload")
		collectionView.reloadData() // logs out "Reload" and then reloads the items, causing each item to log out from the `cellForItemAt` function
	}

	func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
		items.count
	}

	func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
		let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! MyCollectionViewCell

		let item = items[indexPath.item]

		print(item) // Logs out 1-10 (items from the array)

		cell.label.text = "\(item)"

		return cell
	}
}

Here is the collection view...

Here is the log. As you can see, each "Reload" then only logs 1...10 once each.