title: Kerning issues with headless chrome
body: <p>Running some selenium tests that involve screenshot based assertions and running to the following issue:</p>
  
  <p><a href="https://i.stack.imgur.com/Xafsc.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Xafsc.png" alt="enter image description here"></a></p>
  
  <p>For some reason headless chrome (v69 on ubuntu 16.04) screws up kerning and as a result the screenshots end up being quite different, more than the 1% threshold I've set. </p>