Topic(s)
A field formating issue in the View.
The Title field formatter dropdown was set to Plain Text, instead of Comment Permalink.
With the former, the URL was for example https://thejackpot.blog/comment/143, and went only to the post page, not the comment on that post page.
With the latter, the URL was https://thejackpot.blog/comment/143#comment-143, and went directly to the comment.
So again and as so often, the machine was doing exactly what I told it to do.