title: Highcharts - Range Selector - Date fields not visible
body: <p><a href="https://i.stack.imgur.com/xzbmA.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/xzbmA.jpg" alt="enter image description here"></a>I am using Highcharts 4.2.5. 
  The Range Selector is partially displayed. The from &amp; to date boxes are not displayed, but sometimes if i enlarge the page , i see the date fields, but the date field is readonly. One more observation, i see the date field if the chart width is big. But with multiple line charts the date does not come.</p>
  
  <p><a href="https://i.stack.imgur.com/7U7ZZ.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/7U7ZZ.jpg" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/6bRcZ.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/6bRcZ.jpg" alt="enter image description here"></a></p>
  
  <p>Below is my options</p>
  
  <pre><code>{
  "tooltip" : {
      "useHTML": "true",
      "headerFormat" : "{point.key}&lt;br&gt;"
  
  },
  
  "credits" :  {
      "enabled" : true
  },
  "navigator" :{
      "enabled": true
  },
  "scrollbar" :{
      "enabled": true
  },
  
  "rangeSelector" :  {
      "allButtonsEnabled" : true
  }, 
  
  "legend" :  {
      "enabled" : true
  },
  "title" : {
      "text" : ""
  },
  
  "series" : []
  }
  </code></pre>