These 5 characters should be composited as one Hangul syllable.

U+1101 U+1101 U+1161 U+11A8 U+11A8 => U+AE4E

Harfbuzz works well:

$ hb-shape build/JebudoSans.ttf $'\xe1\x84\x80\xe1\x84\x80\xe1\x85\xa1\xe1\x86\xa8\xe1\x86\xa8'
[uniAE4E=0+962]
$

But in Pango, it is rendered as partially-combined 3 glyphs.

ᄀ각ᆨ

It should be rendered as same as 깍

