[Swift] UICollectionViewのレイアウトが崩れてしまう

Question

内容

ブラウザを作成していて、新しいページのところに表示するViewController内のUICollectionViewのレイアウトが崩れてしまいます。
UICollectionViewを最初に表示しているときはLayoutが崩れないが、上にスクロールして戻るとレイアウトが崩れています。

レイアウトが崩れる前↓

レイアウトが崩れた後↓

エラーログ

該当のソースコード

ソースコードがとても長いので、UICollectionViewの実装部分と表示するUICollectionViewCellのサブクラスだけ載っけます。

collectionViewの実装部分↓

        let layout = UICollectionViewFlowLayout()
        layout.itemSize = CGSize(width:76, height:85)
        layout.sectionInset = UIEdgeInsets(top: 13, left: 13, bottom: 13, right: 13)
        layout.headerReferenceSize = CGSize(width:view.bounds.size.width,height:48)
        layout.estimatedItemSize = .zero
        layout.minimumLineSpacing = 0
        layout.minimumInteritemSpacing = 0

        collectionView = UICollectionView(frame: .zero, collectionViewLayout: layout)
        collectionView.translatesAutoresizingMaskIntoConstraints = false
        collectionView.register(NewPageIconCell.self, forCellWithReuseIdentifier: "MyCell")
        collectionView.register(UICollectionReusableView.self, forSupplementaryViewOfKind: UICollectionView.elementKindSectionHeader, withReuseIdentifier: "Section")
        collectionView.backgroundColor = .clear
        collectionView.delegate = self
        collectionView.dataSource = self
        if isEditingCell {
            let tapGesture = UITapGestureRecognizer(target: self, action: #selector(screenTapped))
            collectionView.addGestureRecognizer(tapGesture)
        }
        self.view.addSubview(collectionView)
        NSLayoutConstraint.activate([
            collectionView.topAnchor.constraint(equalTo: view.topAnchor),
            collectionView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
            collectionView.leftAnchor.constraint(equalTo: view.leftAnchor),
            collectionView.rightAnchor.constraint(equalTo: view.rightAnchor)
        ])

NewPageIconCell.swift

import Foundation
import UIKit

protocol NewPageIconCellDelegate : AnyObject {
    func removeCell(cell:NewPageIconCell)
}

class NewPageIconCell : UICollectionViewCell, Crop, FaviconOptimizer {
    
    weak var delegate:NewPageIconCellDelegate!
    var url = ""
    var icon = UIImageView()
    var removeIcon = UIButton()
    var stack = UIStackView().then {
        $0.alignment = .center
        $0.axis = .vertical
        $0.distribution = .equalSpacing
        $0.translatesAutoresizingMaskIntoConstraints = false
    }
    var title:String = ""
    var isEditingCell:Bool = false
    
    override init(frame: CGRect) {
        super.init(frame: .zero)
    }
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    public func setIconAndUrl(url:String,title:String,size:Int,isEditing:Bool) {
        self.isEditingCell = isEditing
        let data = optimizeFaviconData(url: url)
        if !data.0 {
            FavIconFetcher.download(url:url) { result in
                if case let .success(image) = result {
                    DispatchQueue.main.async {
                        self.iconSet(image: image, url: url, size: size, title: title, crop: true)
                    }
                }
            }
        }else{
            self.iconSet(image: data.1!, url: url, size: size, title: title, crop: false)
        }
    }
    func urlToHostName(urlString:String) -> String {
        if let component: NSURLComponents = NSURLComponents(string: urlString) {
            return component.host ?? "about:blank"
        }else{
            return "about:blank"
        }
    }
    private func iconSet(image:UIImage,url:String,size:Int,title:String,crop:Bool) {
        self.title = title
        self.icon = crop ? UIImageView(image: cropThumbnailImage(image: image, w: size, h: size)).then {
            $0.translatesAutoresizingMaskIntoConstraints = false
            $0.clipsToBounds = true
            $0.layer.cornerRadius = 5
        }:UIImageView(image: image).then {
            $0.translatesAutoresizingMaskIntoConstraints = false
            $0.clipsToBounds = true
            $0.layer.cornerRadius = 7
            if image == UIImage(systemName: "plus") {
                $0.tintColor = .white
                $0.backgroundColor = .lightGray
                $0.layer.cornerRadius = 5
                $0.clipsToBounds = true
            }
        }
        if isEditingCell {
            self.removeIcon = UIButton().then {
                $0.setImage(UIImage(systemName: "xmark.circle.fill"), for: .normal)
                $0.addTarget(self, action: #selector(removeCell), for: .touchUpInside)
                $0.translatesAutoresizingMaskIntoConstraints = false
                $0.tintColor = .lightGray
            }
        }
        self.url = url
        self.setupIcon()
    }
    @objc func removeCell() {
        self.delegate.removeCell(cell: self)
    }
    private func setupIcon() {
        self.addSubview(stack)
        let titleLabel = UILabel().then {
            $0.text = title
            $0.textColor = .blackWhite
            $0.translatesAutoresizingMaskIntoConstraints = false
            $0.textAlignment = .center
            $0.font = UIFont.systemFont(ofSize: 13)
        }
        stack.addArrangedSubViews([icon,titleLabel])
        NSLayoutConstraint.activate([
            titleLabel.widthAnchor.constraint(lessThanOrEqualTo: widthAnchor),
            icon.widthAnchor.constraint(equalToConstant: 60),
            icon.heightAnchor.constraint(equalToConstant: 60),
            stack.topAnchor.constraint(equalTo: topAnchor,constant: 6),
            stack.bottomAnchor.constraint(equalTo: bottomAnchor),
            stack.leftAnchor.constraint(equalTo: leftAnchor,constant: 6),
            stack.rightAnchor.constraint(equalTo: rightAnchor,constant:-6)
        ])
        if isEditingCell {
            self.addSubview(removeIcon)
            NSLayoutConstraint.activate([
                removeIcon.topAnchor.constraint(equalTo: self.topAnchor),
                removeIcon.rightAnchor.constraint(equalTo: self.rightAnchor)
            ])
        }
    }
}

試したこと

とりあえずネットに書いてあることは全て試しました。例えば、estimatedSizeをnoneにしたり、spacingを変えてみたりしました。
エラーログ的にAuto Layout関係でクラッシュしているようなのですが、いつもとは違う制約のエラーなので、自分にはさっぱりわかりません。
有識者の方ご教授いただけると幸いです。

Answer 1

なぜかCellを再描画する際にstackView内に2つUIImageViewが入ってたみたいなので、一度stackViewをリセットすることで解決しました。
stack.removeAllArrangedSubviews()

func removeAllArrangedSubviews() {
    let removedSubviews = arrangedSubviews.reduce([]) { (allSubviews, subview) -> [UIView] in
        self.removeArrangedSubview(subview)
        return allSubviews + [subview]
    }
    NSLayoutConstraint.deactivate(removedSubviews.flatMap({$0.constraints }))
    removedSubviews.forEach({ $0.removeFromSuperview() })
    }
}