title: What does the "Expected to not be in Angular Zone, but it is!" error mean?
body: <p>I started getting this error after upgrading from Angular 2 RC4 to RC5. It does not seem to be affecting the behaviour of the application but is being written to the console and could distract from other errors etc.</p>
  
  <p>Can anyone provide some tips on how to troubleshoot it?</p>