Extended Helmholtz-Ellis accidentals Combining lower/raise by one 23-limit comma inverted

[kureta]

According to both 1.3 and latest standards up arrow means lower and down arrow means raise by one 23-limit comma. Am I missing something or are these supposed to be the other way around?

source: smufl 1.3

source: smufl latest

@kureta in musescore/MuseScore#23775 (comment)

[recentlymaterialized]

(This has also been raised in the repository steinbermedia/bravura.)