title: Subview is showing the main view underneath
body: <p>I've got this strange bug in my app.  I'm making a subview and drawing it over the top of my main view.  To get rid of it I'd just hide it.  Here's the problem:  There I can see part of the view underneath peeking through the bottom in a line that seems to be the same size as the status bar.  I've put how I'm adding my subview below, along with a screenshot to illustrate my problem.  </p>
  
  <pre><code>theLaunch = [[firstLaunch alloc] init]; 
  
  [window addSubview:theLaunch.view]; // it goes on top   
  [window makeKeyAndVisible];
  </code></pre>
  
  <p>Here's the screenshot...the view underneath is grey. 
  <img src="https://i.stack.imgur.com/TxbBJ.png" alt="alt text"></p>