Comment by chrismorgan

Responsible:

  <link rel="stylesheet" href="/_digested/assets/css/main-e03066e7ad7653435204aa3170643558.css" media="print" onload="this.media='all'">
  <noscript><link rel="stylesheet" href="/_digested/assets/css/main-e03066e7ad7653435204aa3170643558.css"></noscript>

This is deliberate FOUC. Why, I have no notion whatsoever. It should read:

  <link rel="stylesheet" href="/_digested/assets/css/main-e03066e7ad7653435204aa3170643558.css">