Also now it is screwing up my Pali diacritics.
With the font stack
font family: "Times New Roman", "Times Roman", Times, Georgia, "Bitstream Charter", serif;
I had been able dependably to display diacritics in the chosen font family for the Pali language. Now it is somewhat randomly reverting to a monospaced typewriter font for most diacritics. Sometimes staying with that through the rest of the word, other times just for the letter with the diacritic.
Yes, I know that code draws from my computer's fonts. But (1) I'm viewing it on the same computer with the same fonts, and (2) these seem so ubiquitous in their extended unicode versions that every OTHER computer I've checked it on (in the past 2 years) also displayed these fine.
And now, not. Not on my same old computer with the same fonts, that is.