Please correct me if I am wrong, but it seems to me that markdown is not being interpreted when topics are generated via the embedded discussions feature.
This is a generated topic from the following page: Tobin, The Clueless One - Fire Emblem Heroes
I have configured Discourse to pull the contents of #copyme, which it does. However, the copied text is displaying literally.
As you can see in the screenshot, when I click the edit button, the preview is correct. If I make an update to the post, the markdown is interpreted.