title: UILabel with multiple chained NSAttributedString, with line limit, show the tail truncation with NSBackgroundColorAttributeName of unseen text
body: <p>The dots are added automatically by the UILabel, cause of line limitation, but they get the background color of hidden truncated text:</p>
  
  <p><img src="https://i.stack.imgur.com/OsKSp.png" alt=""></p>
  
  <p>So I have UILabel with line limit of 10 and line break mode of TruncatingTail.
  I also have 2 types of attributed strings that build this UILabel content.</p>
  
  <ol>
  <li>NSForegroundColorAttributeName, NSFontAttributeName</li>
  <li>NSBackgroundColorAttributeName, NSForegroundColorAttributeName, NSFontAttributeName</li>
  </ol>
  
  <p>Any idea why the UILabel is adding background color to the dots? There is text in line 12 (which is truncated) that have that background...</p>