There is something strange with this answer and this question. Basically, I left a comment on my answer. Some time after, I deleted it to "rewrite" it and the system seems to see a "ghost" comment now:
But if you click, look, there is no 1 more comment:
I see that the label also says "add" but it's the first time I see "folded" comments with 2 comments. Looks strange to me.