El Capitan has removed Hoefler Text support!
Wow... we noticed with the recent OS9 update that our blog was displaying odd on the iPhone—italics were all bolded. And then with El Capitan, the entire blog is bold! It seems that Apple decided to fix something that wasn't broke (again), and removed support for Hoefler Text in Safari, which is the main body of this blog (which has tens of thousands of readers). What on earth? The blog is displaying fine in Firefox. But Safari has broken it. I don't see a fix for this, other than hiring a source code editor to override our CSS stylesheet.
Cue: roll eyes. 😠