title: Ionic 3 select tab ionViewDidEnter
body: <p>I have a "<strong>TabsPage</strong>" which is the first page of app. I use <code>this.tabs.select(3)</code> inside <code>ionViewDidEnter</code> of this page to select the 4th tab. This opens the 4th tab as the default tab but the div with class of <code>.scroll-content</code> doesn't have top margin so it goes up behind header. However if I use timeout like: </p>
  
  <pre><code>setTimeout(() =&gt; {
    this.tabs.select(3);
  }, 5000)
  </code></pre>
  
  <p>Everything seems okay when 4th tab is opened. What do you think the problem can be? </p>