UITextView text content doesn’t start from the top

I had the same problem, and turns out I had to set the content offset in viewDidLayoutSubviews for it to take effect. I’m using this code to display attributed static text.

- (void)viewDidLayoutSubviews {
    [self.yourTextView setContentOffset:CGPointZero animated:NO];
}

SWIFT 3:

override func viewDidLayoutSubviews() {
    super.viewDidLayoutSubviews()
    self.textView.setContentOffset(CGPoint.zero, animated: false)
}