title: missing select options with Sweet Alert
body: <p>This may be a ServiceNow issue, but I added a Sweet Alert to show a select box just so I can gather a value to pass on to the next record... but the select box is not showing, the popup is there just no box or options.  What am I missing?  Screenshot:
  <a href="https://i.stack.imgur.com/rfrgK.png" rel="noreferrer">Select Box Alert</a></p>
  
  <p>Thanks so much, super frustrated with something I thought would be simple to add :)</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-js lang-js prettyprint-override"><code>swal({
    title: 'Select Outage Tier',
    input: 'select',
    inputOptions: {
      '1': 'Tier 1',
      '2': 'Tier 2',
      '3': 'Tier 3'
    },
    inputPlaceholder: 'required',
    showCancelButton: true,
    inputValidator: function (value) {
      return new Promise(function (resolve, reject) {
        if (value !== '') {
          resolve();
        } else {
          reject('You need to select a Tier');
        }
      });
    }
  }).then(function (result) {
    swal({
      type: 'success',
      html: 'You selected: ' + result
    });
  });</code></pre>
  </div>
  </div>
  </p>