title: GUI missing in my highcharts-angular version of stock-tools-gui demo
body: <p>I am trying to make an Angular version of the nice demo: <a href="https://www.highcharts.com/stock/demo/stock-tools-gui" rel="nofollow noreferrer">https://www.highcharts.com/stock/demo/stock-tools-gui</a> . </p>
  
  <p>I use the official highcharts-angular wrapper in my attempt here: <a href="https://codesandbox.io/s/pjkqwwmkr7" rel="nofollow noreferrer">https://codesandbox.io/s/pjkqwwmkr7</a>  - it works except the GUI elements are not showing. What did I miss? Any hint is highly appreciated.</p>