How to fix UITextView text content position in Swift - swift

Question

I have UIView class and in this class have UITextView for use as inputText
In textViewDidChange from row 2 through 5 with any inter, or adding text, I add the UITextView bounds.size.height as much as need.
The problem is, in rows 3 and 5, first line text does not appear.
To be roughly a row above its own space.
And is created from the bottom of the empty space, without scrolling.
But the text in the 4th row have exact position
class QuestionCell: UIView, UITextViewDelegate{
var paragraph = UITextView()
func setParagraph(){
let frame = CGRect(x: 50,
y: 0,
width: forground.width-55,
height: forground.height)
paragraph.frame = frame
paragraph.isEditable = true
paragraph.delegate = self
// forground is some UIView in this View
forground.addSubview(paragraph)
}
func textViewDidChange(_ textView: UITextView) {
paragraph.bounds.size.height = paragraph.paragraphHeight
}
}
extension UITextView{
var paragraphHeight: CGFloat{
let fixedWidth = self.width
let newSize = self.sizeThatFits(CGSize.init(width: fixedWidth,
height: CGFloat(MAXFLOAT)))
var newFrame = self.frame
newFrame.size = CGSize.init(width: CGFloat(fmaxf(Float(newSize.width),
Float(fixedWidth))),
height: newSize.height)
return newSize.height
}
}

Answer 1

During Creating you need to specify :
paragraph.isScrollEnabled = false
After creating, you may set it back.