SVG font variants work well, except when included from an external svg file. See attachments.
Created attachment 150989 [details] The font file to be used with test0.svg
Created attachment 150990 [details] Test case
Firefox and Chrome do not show the second 'C' character. I'm not sure if it's supposed to be invisible or not, but Safari does show the second character 'C'.
<rdar://problem/97097381>