I’m sure they will over time, but I would guess there’s a surprising number of potential issues with any font variance. That’s the kind of thing that can appear hardware-dependently, like certain high/low-res monitors showing fonts too big, too small, or even not at all. So any bug fixes that have come through on the subject will rely on user bug reports.

If it was as simple as the font swapping feature seen in Word, I’m sure it wouldn’t be a big deal.