Jeremy, I think this was a known issue with the WordPress Semantic Linkbacks pluin and thought it got address/fixed in a recent update. If not, do file a bug at https:/
Also interesting, it looks like Independent Publisher (theme) isn't outputting a permalink for the comments on Among The Stones either. If they're webmentions, all the URLs point to the locations of of comment originals, which makes it harder to target individual comments with fragmentions.
It may well be a known bug, but as it isn't my site that is affected, I cannot investigate in any detail. I feel odd about reporting "issues" that don't affect me directly and that I have only witnessed and wondered about. So I just draw attention to them. I haven't seen similar behaviour on my child of Independent Publisher, I don't think.
If anyone is going to report it, I would think it would be you or James
Jeremy Cherfas, Oct 02 2017 on stream.jeremycherfas.net