We recently started implementing google fonts on some templates. One in particular has an issue where instead of showing a fallback font in Apple Mail 5, the place where the text should be is just completely blank: https://litmus.com/pub/fb4183c

We found a thread on campaign monitor getting the same result in Litmus, but the thread has not been answered.

My apple mail is at version 7 so unfortunately I can't do a test "for real" to see if this really happening. I've always known Litmus to be extremely accurate, though, so just looking for any suggestions here in case others have encountered this. Thanks!