See
this post. I attached the image, then used the attachment dropdown list to select the images as described in the help. That resulted in [attach]nnnn[/attach] being added to the post inline. So far so good?
Well open
that post and click on one of the images. You get a new tab with the tiny thumbnail. Close the tab with the thumbnail and you see an overlay on the tab with the original post of a larger rendition. This seems really strange.
Now open
@gutted's original post for this thread. How did he get those images to just show in-line in the post?