[mabbo]

A month ago I was trying to migrate some tests from phantomjs to chrome headless. The big blockers I ran into were that chromedriver automation has certain functionality that only works with a special chrome extension that it installs- but headless chrome doesn't support extensions.

There's work being done to fix this, but it's still in progress, last I checked. Until then, resizing windows, taking screenshots and a handful of other things simply don't work.