A discussion on the Discourse forum highlights a missing emoji, frowning_face_with_open_mouth, in Apple’s emoji set. mentalstring reports the issue, noting the emoji is absent in Apple/International but present in other sets like Twitter and Google. The user also points out a duplication issue where :frowning: and :frowning_face_with_open_mouth: refer to the same image. jomaxro references a related commit, while j.jaffeux acknowledges the issue and plans to address it alongside other emoji fixes. Falco confirms the issue is resolved, with the missing emoji now available in the Apple set.
Not sure if this is of any help, but I think there may be some duplication causing this. Even with the twitter set being used here, there’s two emojis which are the same one: