title: ion-item-options not displaying
body: <p>I am developing an app using Ionic 3. I have an ion-item-sliding wrapped within an ion-list. I need to show the options when the list item is swiped. I got the color working but the text is not displaying at all. I don't have any css applied to the button at all.</p>
  
  <pre><code>&lt;ion-list text-wrap&gt;
        &lt;ion-list-header&gt;
          ...
        &lt;/ion-list-header&gt;
        &lt;ion-item *ngIf="classes?.length === 0"&gt;No Data&lt;/ion-item&gt;
        &lt;ion-item-group *ngFor="let classObj of classes"&gt;
          &lt;ion-item-divider&gt;...&lt;/ion-item-divider&gt;
          &lt;ion-item-sliding *ngFor="let class of classObj?.classes"&gt;
            &lt;ion-item *ngFor="let class of classObj?.classes"&gt;
              &lt;ion-grid&gt;
                ...
              &lt;/ion-grid&gt;
            &lt;/ion-item&gt;
            &lt;ion-item-options side="right"&gt;
              &lt;button ion-button color="secondary"&gt;
                Change
              &lt;/button&gt;
            &lt;/ion-item-options&gt;
          &lt;/ion-item-sliding&gt;
        &lt;/ion-item-group&gt;
      &lt;/ion-list&gt;
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/bQGkI.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/bQGkI.png" alt="enter image description here"></a></p>
  
  <p>I have no idea what went wrong. This happened to both Android and iOS</p>