Why does my UITableView “jump” when inserting or removing a row?

Question

(Happy to accept an answer in Swift or Objective-C)

My table view has a few sections, and when a button is pressed, I want to insert a row at the end of section 0.

Answer 1

for me work, turn off automatic estimate for tableview rows, section, headers and I use heightForRowAt

func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
        if indexPath.row % 2 == 1 {
            if arrowsVisible {
                return 20
            }
            return 5
        }
}