problem with moderated comments

On my blog https://xmau.com/wp/notiziole all comments are sent to me for review, and those from a newcomer have to be manually approved. Since some months ago, while comments from oldcomers are regularly shown, I cannot see the text of those from newcomers: only the possible actions (approve/trash/spam) are present, with the relative link. If I click on the link I see the comment, but there is a warning “Invalid comment ID”, which is probably the reason while I don’t receive the text of the comment.

I removed all plugins and re-added them one-by-one, and I found that the culprit is Semantic-Linkbacks. That’s not much of a problem for me, since I actually did not use the plugin and so I just deactivate it, but I think it could be useful to let other people know.

I forgot: I am using a spinoff of SimpleX theme.