ios – draw(rect) of UITextView subclass in a UITableViewCell provides invalid “infinite” rects for selectionRects after scroll

I’ve the next UITextView subclass:

class CustomTextView: UITextView {
    
    required init?(coder: NSCoder) {
        tremendous.init(coder: coder)
        customInit()
    }
    
    override init(body: CGRect, textContainer: NSTextContainer?) {
        tremendous.init(body: body, textContainer: textContainer)
        customInit()
    }
    
    func customInit(){
        contentMode = .redraw
        isSelectable = true
        isEditable = false
        isScrollEnabled = false
        let padding = textContainer.lineFragmentPadding
        textContainerInset =  UIEdgeInsets(prime: 0, left: -padding, backside: 0, proper: -padding)
    }
    
    override func draw(_ rect: CGRect) {
        tremendous.draw(rect)
        
        let vary = NSRange(location: 10, size: 5)
        let starting = beginningOfDocument
        let begin = place(from: starting, offset: vary.location)
        let finish = place(from: begin!, offset: vary.size)
        let textRange = textRange(from: begin!, to: finish!)
        let frames = selectionRects(for: textRange!)
        
        print("draw!!! (frames.first?.rect)") // after scrolling, this prints: draw!!! Elective((inf, inf, 0.0, 0.0))
               
        frames.forEach { body in
            let bpath = UIBezierPath(rect: body.rect)
            UIColor.pink.set()
            bpath.stroke()
        }        
        
    }
    
}

This CustomTextView is in every cell of a UITableView and the attributedText is about as such:

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "Cell") as! Cell
    cell.myTextView.attributedText = gadgets[indexPath.row].0
    cell.layoutIfNeeded()
    cell.myTextView.setNeedsDisplay()
    print("setNeedsDisplay!!!")
    return cell
}

The primary time when the desk is displayed, it really works effective. Nonetheless, every cell which will get displayed after scrolling not has the rectangles. After some debugging, I discovered that the rects that are returned from selectionRects(for: textRange!) after scrolling are all invalid with infinite values within the rect. After scrolling, it prints:

draw!!! Elective((inf, inf, 0.0, 0.0))

What am I doing unsuitable?

Screenshot (discover the pink blocks aren’t there within the backside few cells):