title: UIBarButtonItem in navigation bar is highlighted when selected but UIBarButtonItem in toolbar is not
body: <p>I have a simple <code>UITableViewController</code> with a <code>NavigationController</code> as the root view controller. I have added an &quot;Options&quot; <code>UIBarButtonItem</code> to the navigation bar and a &quot;Start&quot; <code>UIBarButtonItem</code> to the toolbar, shown below:</p>
  <p><img src="https://i.stack.imgur.com/tuKlq.png" alt="enter image description here" /></p>
  <p>. The issue that I am experiencing is that the &quot;Options&quot; button will become highlighted when pressed, like a regular <code>UIButton</code> would, but the &quot;Start&quot; button on the toolbar does not. This is very inconvenient, as it makes it very hard for the user to know if they actually pressed the button or not. This behavior is shown below:</p>
  <p>Options Button <strong>Not Pressed:</strong></p>
  <p><img src="https://i.stack.imgur.com/CDImo.png" alt="enter image description here" /></p>
  <p>Options Button <strong>Pressed:</strong></p>
  <p><img src="https://i.stack.imgur.com/mcBP7.png" alt="enter image description here" /></p>
  <p>Start Button <strong>Not Pressed:</strong></p>
  <p><img src="https://i.stack.imgur.com/nStme.png" alt="enter image description here" /></p>
  <p>Start Button <strong>Pressed:</strong></p>
  <p><img src="https://i.stack.imgur.com/3cw6Y.png" alt="enter image description here" /></p>
  <p>I can't figure out how to fix this behavior. I did verify that the &quot;Start&quot; button actually works, so the highlighting issue is not because the button is not working. Also, interestingly enough, the &quot;Start&quot; button <strong>does</strong> become highlighted when it is long pressed.</p>