Don't hide items when there are still space

I am trying to use the command bar of ng-office-ui-fabric, here is a code

<!DOCTYPE html>
<html>
<head>
  <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.6.4/angular.min.js"></script>
  <link rel="stylesheet" href="https://static2.sharepointonline.com/files/fabric/office-ui-fabric-core/2.6.3/css/fabric.min.css" />
  <link rel="stylesheet" href="https://static2.sharepointonline.com/files/fabric/office-ui-fabric-core/2.6.3/css/fabric.components.min.css" />
  <script src="https://cdnjs.cloudflare.com/ajax/libs/ngOfficeUiFabric/0.15.3/ngOfficeUiFabric.min.js"></script>
</head>
<body ng-app="YourApp"> 
  <div ng-controller="YourController">
      <uif-command-bar>
        <uif-command-bar-main>
          <uif-command-bar-item>
            <span>one</span>
          </uif-command-bar-item>
          <uif-command-bar-item>
            <span>two</span>
          </uif-command-bar-item>
          <uif-command-bar-item>
            <span>three</span>
          </uif-command-bar-item>
        </uif-command-bar-main>
      </uif-command-bar>
  </div>
  <script type="text/javascript"> 
    angular.module('YourApp', ['officeuifabric.core', 'officeuifabric.components'])
    .controller('YourController', ['$scope', function ($scope) {}])
  </script> 
</body>
</html>

If we change the width of the preview, we could see that the items are hidden very easily (we could see a class is-hidden is added), even though there are visually lots of space.

Does anyone know how to control this limit width such that the items are not hidden easily?

Another option is never hiding the command items, does anyone know how to enable this?

Otherwise, is it possible to make a command bar with office-ui-fabric in angularjs without ng-office-ui-fabric?