Answer from Tess (to be reworded for the official docs): Under the bucket symbol is a tool that browses the buckets using AWS native infrastructure. Under the file symbol is the users home directory and anything else mounted to look like a file system. Buckets are not file systems so they don't show up there. (Except for the s3 directory which is a remnant of a failed experiment to provide them that way.).
Answer from Tess (to be reworded for the official docs): Under the bucket symbol is a tool that browses the buckets using AWS native infrastructure. Under the file symbol is the users home directory and anything else mounted to look like a file system. Buckets are not file systems so they don't show up there. (Except for the s3 directory which is a remnant of a failed experiment to provide them that way.).