title: Angular 5 reactive form - patchValue with FormArray not working
body: <p>I have this reactive form in the Ionic3 framework, which I need to populate with data I retrieve from API. To do so I am using <code>patchValue</code> as I read somewhere that it is more reliable than <code>setValue</code>. </p>
  
  <p>The problem I am facing is, it does not populate repeated form fields. To explain better I've created this <a href="https://stackblitz.com/edit/ionic-mfkbup" rel="nofollow noreferrer">example code</a>. </p>
  
  <p>I have tried other ways around like directly assigning data to the respective field instead of using <code>for</code> loop first, but that only populated 1 set instead of all 3.</p>
  
  <p>Can someone point out what I am doing wrong, or provide a better solution?</p>
  
  <p>Thank you</p>