[jsmith45]

Umm... that output seems confusing.

The ListObjects api will omit all objects that share a prefix that ends in the delimiter, and instead put said prefix into the CommonPrefix element, which would be reflected as PRE lines. (So with a delimiter of '/', it basically hides objects in "subfolders", but lists any subfolders that match your partial text in the CommonPrefix element).

By default `aws s3 ls` will not show any objects within a CommonPrefix but simply shows a PRE line for them. The cli does not let you specify a delimiter, it always uses '/'. To actually list all objects you need to use `--recursive`.

The output there would suggest that bucket really did have object names that began with `bar-folder/`, and that last line did not list them out because you did not include the trailing slash. Without the trailing slash it was just listing objects and CommonPrefixes that match the string you specified after the last delimiter in your url. Since only that one common prefix matched, only it was printed.