A new installation for a website I'm building for a client.
I've uploaded 3 images, and successfully attached one to a post as the Featured Image. The images are in the uploads directory, and the Featured Image displays with the post.
The Media Library summary says:
All(3) | Images(3) | Unattached(2)
which makes sense, since I've attached one of the images.
The Media Library listing says:
No media attachments found.