This notification
seems to be informing me of a new comment, so given that it has no link on the word comment or the speech bubble, I assume the link on the question title is supposed to be a link to the new comment.
But the URL of that link fails to show a comment. It briefly shows
and then scrolls to
Manually scanning the comments for the date-time cited in the notification (Oct 20 at 7:29) finds none.