After looking at it further, I actually CAN set the font size up to 32, and it does work (it doesn't look good though, as the rendering isn't so nice after a certain size). The preview however will not allow me to see what it looks like beyond 19 - so while I can use the sizes from 20-32, I really don't have an idea of how large they are until I run a test. Not a huge deal really, just one of those things.
nexus6, I cannot reproduce that issue. Will the option menu not let you set it higher than 19, or do you just not see any change after 19?
It doesn't get any larger after 19. With any font. Been doing that for a while, but I've also been using the same savedvariables file for about a year and a half. Maybe I'll clear that out and start from scratch and see if it still does it.
Edit: no change with a new saved variables file. I'll try disabling some things to see if there's a conflict.
and edited again: I disabled everything, still experiencing the same issue. I tried disabling UI scaling in the video options and the effect was worsened - I could only set the fonts to about 15 before the size stopped changing.
I run at a rather excessive resolution of 2650x1600... could this be contributing to the issue?