title: iOS: Swift: UISlider editingDidEnd not being called
body: <p><a href="https://i.stack.imgur.com/eGHp5.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/eGHp5.png" alt="enter image description here"></a></p>
  
  <p>I've set up a function for editing did end with a slider, but it doesn't look like it's being called. I've thrown a print statement into it, and a breakpoint. Is there something else that needs to be done to trigger a function when my user lets go of the slider?</p>
  
  <pre><code>    @IBAction func sliderEditingDidEnd(sender: UISlider) {
      print("did end");
  }
  </code></pre>