Yes, all on the same domain. There aren’t any external links, only images that were uploaded, and later edited out. Social media is not set up.
I played around with this test thread quite a bit. There were two image uploads, which I later removed from the post. I also turned a post into a wiki, and then switched the wiki off again. Just wondering whether something got messed up with all the editing. The thread is only for learning how to edit posts. It can be deleted.
Any ideas how to trace the error?