Downloads - embedded images in file details issue

[Carl Maltby]

Our Downloads section seems to be acting oddly. In the file description post (for example, HERE) we have CAD plans of guitar designs for download. The written description has an uploaded image which is embedded in the middle of the post. After editing three of these posts, these upload/embeds all seem to be linked for no apparent reason.

In the link shown, the correct image is mid-post. Great. However, below the body of the post (after the CC licence) a second image is shown as an uninserted upload. This image was actually uploaded as part of another file's description. Specifically, this one.

To make issues even more frustrating, editing the first post and removing the extraneous embedded images deletes it from the second post. Why are these documents stepping on each other's toes and pushing embeds into each other?