title: Numeric input writes content backwards
body: <p>I have this app in ionic 3, and there's some numerical inputs like this:</p>
  
  <pre><code>&lt;ion-item class="general-data"&gt;
     &lt;ion-label floating&gt;Input&lt;/ion-label&gt;
     &lt;ion-input type="number" formControlName="anyInput"&gt;&lt;/ion-input&gt;
  &lt;/ion-item&gt;
  </code></pre>
  
  <p>We've been testing on a android tablet, and for this input, it's showed only the numeric keyboard (as intended). However, if I type "123", the input shows "321". </p>
  
  <p>There's no function to force it backwards. Any suggestions?</p>