JRuby with Ruby on Rails HTTP Streaming outputting odd characters

I’m using Ruby on Rails with JRuby on Tomcat.

This is my controller:

class ApplicationController < ActionController::Base
def index
render :stream => true, :text => “Hello World!”

This is the output:

Hello World!

Does anyone have any idea why the “c” or the “0” characters are output onto the page? They do not appear if I set :stream => false. HTTP Streaming does seem to work for Ruby on Rails using JRuby on Tomcat, but there’s this oddity.