When including google fonts and exporting to dropbox, it seems that they only randomly appear (in both recent versions of Safari and Chrome). We are using 10.10.4 and are in a uni environment, so there could also be an issue with our university internet caching causing the problem.
I know you need to untick 'create offline application cache' to get google fonts to appear on IOS devices without a network, but our uni macs are ALWAYS online. Is there a known issue with 10.10.4, or is it our lab mac's browser caching? Ta -