Does not happen on Windows, happens on macos, haven't checked on Linux
- open about:newtab
- open devtools > inspector > font panel
- expand "All Fonts on Page"
- check the font preview for .SF NS Text
ER: The font preview should have a correct size
AR: The font preview is extremely small compared to previews for any other font
Note: The rendering will be slightly modified by Bug 872078, but the issue already exists without the changes from this bug.