[iOS26]UITableView drag bug

I encountered a bug with drag-and-drop sorting in ios 26.

I created a UITableView for dragging and dropping to adjust the order of the list. However, when I set the height of the cells to a custom height, some cells were not displayed during the dragging process.

The tools I use are the official version of Xcode16.1 and the ios 26 emulator And I can also reproduce the same problem on the real device.

class ViewController: UIViewController {

    private let tableView: UITableView = {
        let tableView = UITableView.init(frame: .zero, style: .grouped)
        tableView.backgroundColor = .clear

        tableView.estimatedSectionHeaderHeight = 50
        tableView.isEditing = true
        tableView.showsVerticalScrollIndicator = false
        tableView.allowsSelectionDuringEditing = true
        return tableView
    }()
    
    var content: [Int] = []
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        tableView.register(FTWatchGroupPageCell.self, forCellReuseIdentifier: "FTWatchGroupPageCell")
        tableView.delegate = self
        tableView.dataSource = self
        view.addSubview(tableView)
        
        for i in 1...100 {
            content.append(i)
        }
        
        tableView.reloadData()
    }
    
    override func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()
        var frame = view.bounds
        frame.origin.y = 200
        frame.size.height = frame.size.height - 200
        tableView.frame = frame
    }
    
}

extension ViewController: UITableViewDelegate, UITableViewDataSource {
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return content.count
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "FTWatchGroupPageCell", for: indexPath) as! FTWatchGroupPageCell
        
        cell.label.text = "\(content[indexPath.row])"
        cell.label.sizeToFit()
        
        return cell
    }
    
    func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
        return 52.66
    }
    
    public func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
        return 0.01
    }
    
    public func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
        return 0.01
    }
    
    public func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool {
        return true
    }
    
    public func tableView(_ tableView: UITableView, editingStyleForRowAt indexPath: IndexPath) -> UITableViewCell.EditingStyle {
        return .none
    }
    
    public func tableView(_ tableView: UITableView, shouldIndentWhileEditingRowAt indexPath: IndexPath) -> Bool {
        return false
    }
    
    public func tableView(_ tableView: UITableView, canMoveRowAt indexPath: IndexPath) -> Bool {
        return true
    }
    
    public func tableView(_ tableView: UITableView, moveRowAt sourceIndexPath: IndexPath, to destinationIndexPath: IndexPath) {
        
        let item = content.remove(at: sourceIndexPath.row)
        content.insert(item, at: destinationIndexPath.row)
        
        tableView.reloadData()
    }
}


class FTWatchGroupPageCell: UITableViewCell {
    
    private let contentBackView = UIView()
    
    let label = UILabel()

    override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        
        contentView.isHidden = true
        
        addSubview(contentBackView)
        contentBackView.backgroundColor = .red
                
        contentBackView.addSubview(label)
        label.textColor = .black
        label.font = .systemFont(ofSize: 14)
        
        contentBackView.frame = .init(x: 0, y: 0, width: 200, height: 30)
    }
    
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    override func layoutSubviews() {
        super.layoutSubviews()
        
        guard let reorderControlClass = NSClassFromString("UITableViewCellReorderControl"),
              let reorderControl = subviews.first(where: { $0.isKind(of: reorderControlClass) }) else {
            return
        }
        reorderControl.alpha = 0.02
        reorderControl.subviews.forEach({ subView in
            if let imageView = subView as? UIImageView {
                imageView.image = UIImage()
                imageView.contentMode = .scaleAspectFit
                imageView.frame.size = CGSize(width: 20, height: 20)
            }
        })
        
        
    }
}