This is a cairo bug. Fixed in git master:
http://gitweb.freedesktop.org/?p=cairo;a=commit;h=7e83d6e6fb8c4b11d5d95acac4a35df8969e0944
This is a cairo bug. Fixed in git master:
http:// gitweb. freedesktop. org/?p= cairo;a= commit; h=7e83d6e6fb8c4 b11d5d95acac4a3 5df8969e0944