title: ng-select shows all available options in a list and not just one line?
body: <p>I tried ng-select and for me it does not correctly show just one line instead it shows a list of all the available options. I then looked at the docs and in multiple browsers and noticed the exact same thing. Specifically the demo that Angulars provide:</p>
  
  <p><a href="https://docs.angularjs.org/api/ng/directive/select" rel="nofollow">https://docs.angularjs.org/api/ng/directive/select</a></p>
  
  <p><strong>Using ngValue to bind the model to an array of objects</strong> example</p>
  
  <pre><code>&lt;select size="6" name="ngvalueselect" ng-model="data.model" multiple&gt;
    &lt;option ng-repeat="option in data.availableOptions" ng-value="option.value"&gt;{{option.name}}&lt;/option&gt;
  &lt;/select&gt;
  </code></pre>
  
  <p>Can anyone explain why this does not show correctly? Note that I removed the "multiple" in my code. Here's my code:</p>
  
  <pre><code>&lt;select size="6"
          name="ngvalueselect"
          ng-model="row.categoryId"&gt;
      &lt;option ng-repeat="option in phs.phraseCategory.data"
              ng-value="option.id"&gt;
          {{option.name}}
      &lt;/option&gt;
  &lt;/select&gt;
  </code></pre>
  
  <p>Note that in the AngularJS docs the example after that works fine:</p>
  
  <pre><code>&lt;select name="mySelect" id="mySelect"
    ng-options="option.name for option in data.availableOptions track by option.id"
    ng-model="data.selectedOption"&gt;&lt;/select&gt;
  </code></pre>