One of my postings was just awarded a ‘popular link’ by Discourse today. But when checking that posting, it had nothing that should had remained links, just images posted by URL reference on the wiki: in https://gramps-project.org/wiki/images.
Discourse was pulling the add and share button image data from the gramps-project dot org domain rather than converting it to a local upload://
It showed the actual url as the hotlink:
https://gramps-project.org/wiki/images/2/20/Stock_add.png
And while writing this posting, the following link unpredictably showed the either the image or the URL when serving the example and quoted posting. And since there were 2 URLs with different follow counts of 50 & 46, it is certain that some visitors to the site aren’t getting the same experience as others. (In 8 visits to that posting, 2 had images, 6 showed linked URLs with ‘followed’ counts.)
Elsewhere in the thread, the URL is converted to

And rendered as