Hi! I noticed that in Glyphs, both the OpenType features ‘dnom’ and ‘numr’ are labeled in Korean as ‘분모’.
‘dnom’ refers to the bottom part of a fraction, so ‘분모’ is correct (‘모(U+BAA8)’ means ‘parent’).
However, ‘numr’ should be labeled ‘분자’, where ‘자(U+C790)’ means ‘child’.
If possible, it would be great to have this corrected in a future update.