I used an older version of Chromium 64bit and the Mactype rendering was
enabled. It was also enabled in Chrome, also an older version. For other
reasons I decided to update Chromium 64bit to the newest version. After
updating the text lost its Mactype rendering. I checked in the older version of
Chrome and it was disabled there too. Now I've updated both Chromium and
Chrome, both 32 and 64bit and I've reinstalled Mactype but the font rendering
is gone. It's still present in my Windows install, I checked every browser I
have and they all lack the rendering now.