Yesterday i’ve updated to macOS Sierra which comes with Safari 10.
Since then my site have a few sections with broken text (text replaced by a boxes with question marks inside).
The same site was working fine in Yosemite with the older version of Safari before the update and still does work correctly in other browsers. Since then i investigated this a little and found other sites displaying the same problem: here’s an example: http://archetypon.net/stacks/torusknot/index.html
This is how i see it in Safari 10 (macOS Sierra):
It displays fine in other browsers. I suppose this is due to a bug in the latest Safari and also Safari Technology Preview.
Anyone else is seeing this?