title: Visual Studio Code - icons in Activity Bar have disappeared
body: <p>Earlier this week I installed the latest release (May 2018) of Visual Studio Code and ever since then all the icons in the Activity Bar (i.e. the long thin bar on the far left of the window) fail to display. I always get the Explorer icon but after that the only one that <em>does</em> display is whatever I currently have open in the sidebar.<br>
  Perhaps some screenshots might help explain:<br>
  <a href="https://i.stack.imgur.com/EYq5c.png" rel="noreferrer"><img src="https://i.stack.imgur.com/EYq5c.png" alt="enter image description here"></a>
  <a href="https://i.stack.imgur.com/gyQb2.png" rel="noreferrer"><img src="https://i.stack.imgur.com/gyQb2.png" alt="enter image description here"></a>
  <a href="https://i.stack.imgur.com/lV47N.png" rel="noreferrer"><img src="https://i.stack.imgur.com/lV47N.png" alt="enter image description here"></a></p>
  
  <p>I've searched high and low in Settings to try and find how to get them all to display but I can't find anything. Can anyone help?</p>
  
  <p>I'm on macOS High Sierra 10.13.5 by the way.</p>