title: 'Source code does not match the bytecode' when debugging on a device
body: <p>I have an app which I am compiling against API level 21:
  <a href="https://i.stack.imgur.com/jv1qz.png"><img src="https://i.stack.imgur.com/jv1qz.png" alt="enter image description here"></a></p>
  
  <p>and then debug it on a real device with API level 23:</p>
  
  <p><a href="https://i.stack.imgur.com/yhZpK.png"><img src="https://i.stack.imgur.com/yhZpK.png" alt="enter image description here"></a></p>
  
  <p>The problem is when I try debugging through the Android OS's own classes, I get 'Source code does not match the bytecode'. Why is this happening? The test device the app is running on is API level 23, and the source file being debugged is level 23 as well.
  <a href="https://i.stack.imgur.com/trwgp.png"><img src="https://i.stack.imgur.com/trwgp.png" alt="*enter image description here*"></a></p>
  
  <p>I am really confused. Can anyone explain why I am seeing this message and how I can fix it?</p>