Non-encoded $ref on https://swagger.io/docs/specification/using-ref/#escape

On https://swagger.io/docs/specification/using-ref/#escape, there's a section that says:

For example, to refer to the path /blogs/{blog_id}/new~posts, you would use:

$ref: '#/paths/~1blogs~1{blog_id}~1new~0posts'

The / and ~ are encoded to ~1 and ~0 respectively. However, the curly braces around blog_id aren't percent-encoded (RFC3986), and this throws an error on editor.swagger.io:

The $ref should be #/paths/~1blogs~1%7Bblog_id%7D~1new~0posts

Start at the “Escape” section of the Using $ref documentation at swagger.io/docs/specification/using-ref/#escape and compare its example with RFC3986 and editor.swagger.io behavior. Update the example so the path parameter braces are encoded, then verify that the displayed reference matches the documented escaping rules.