We use PhantomJS to auto generate images of user generated content. All was fine, until we entered the Asian markets.
It was not the usual black squares issue that you can get with Phantom, it just had spaces where the Korean characters should have been.
The font itself was loading fine, as Latin characters were in the correct type face.
After following lots of posts about installing font support packs on linux, and non of them working, I finally got it running on
sudo yum groupinstall "Korean Support" "Chinese Support" "Japanese Support"