What is missing?
I don't think anything is missing, so to speak, but the furigana are kind of weird with how のぼう isn't lined up with の坊. Also, in the example sentence でく has the furigana of でく, which seems kind of redundant.
Yeah, when the alignment fails I should probably stretch the furigana over the entire word instead of just left align.
The でく issue is because I don't properly strip furigana from before kanji for sentences. Furigana handling is something I need to clean up and unify across the whole site so I can improve it all in one go. Long term I want to have manual correction for tricky cases like ateji and then publish that as an open data file.
missing okurigana
Wooden doll, blockhead