title: Ionic 3: ion-scroll doesn't work
body: <p>I'm using Ionic version 3.19.0. I'm trying to use "ion-scroll" to zoom in and scroll an image. Sadly, this does not seem to be working, I'm using the following code:  </p>
  
  <p>SCSS file:</p>
  
  <pre><code>page-contact {
  ion-scroll {
      white-space: nowrap;
      height: 100%;
  }
  }
  </code></pre>
  
  <p>HTML file:</p>
  
  <pre><code>&lt;ion-content&gt;
    &lt;ion-scroll scrollX="true" scrollY="true" zoom="true"&gt;
        &lt;img src="assets/imgs/debugMap.png" alt="Map"&gt;
    &lt;/ion-scroll&gt;
  &lt;/ion-content&gt;
  </code></pre>
  
  <p>The image displays fine, but I'm not able to either zoom or scroll. I can't seem to find why this is the case. Is my code wrong or am I missing something?</p>
  
  <p>Thanks in advance!</p>