octobercms/october — pull request #448 by shawnsandy (2014-07-21 12:00:03+00:00)
Title: Fix-- antialias issue where font renders bold on mac webkit browsers */

FIX --
This is a known Webkit bug — any text with @font-face applied will be rendered without anti-aliasing if there is a text element without anti-aliasing applied preceding it. Usually those are fonts smaller than 5px or monospaced fonts at small sizes which are rendered without anti-aliasing.