(replying to my own thread)
Never mind…the problem corrected itself (well, almost).
While I was typing the post, it showed the link as all text, but when I hit the final send, the link magically turned into an image.
But by mistake, I inserted the link’s address twice, so two identical images appear in my
post.
And here’s the weird part: when I saw the mistake, I immediately tried to edit my own post, but Discourse wouldn’t let me erase either one of the links.
Discourse displayed both links and their images, but when I tried to erase one of the links, it gave me an error message that I can’t embed links.
Even though both links were already embedded.