I recently moved one of my sites over to an S3-compatible storage solution. Apparently, the move broke some links to some older images (i.e., those uploaded before the move). Everything is updated, I’ve rebuilt the app, and I’ve rebaked all posts.
Both the site logo and the site icon loaded properly in the “Assets for the site design” topic (i.e., the thumbnails loaded properly), but when clicked they 404ed (i.e., the originals were unavailable); after rebaking all posts, the thumbnails also do not load.
The thumbnails appeared to be loading from the uploads directory (i.e., they appear not to have been moved over to S3), and they do not appear to be present on S3. The URLs for the originals also point to the uploads directory, but they do appear to be present on S3 (i.e., just the URLs are wrong).
n.b., this may be related to a bug reported here.