See also: fast/css/ex-unit-with-no-x-height.html I should set the font's x-height according to the font-face element's x-height attribute, if present. If not present, it should be half the em unit.
OS X disregards what the font file reports its x-height as for all non-system fonts. This can't be fixed.
*** This bug has been marked as a duplicate of bug 142465 ***