title: ios7: UILabel with newline as first character let's whole text disappear
body: <p>If you have a UILabel with numberOfLines set something > 1 and try the follwoing:</p>
  
  <pre><code>UILabel *lbl;
  lbl.text = "line1\nline2";   // works and displays 2 lines
  </code></pre>
  
  <blockquote>
    <p>line1</p>
    
    <p>line2</p>
  </blockquote>
  
  <pre><code>lbl.text = "\nline2"; // works in iOS 6 and shows an empty line and a second line with line2
  </code></pre>
  
  <p>does not show anything in iOS 7</p>
  
  <p>Under iOS6 you get:
  >
  ></p>
  
  <blockquote>
    <p>line2  (with an empty first line)</p>
  </blockquote>
  
  <p>Any idea why a newline character at the beginning of a Label-text spoils the UILabel since iOS 7?</p>