[racket] Scribble's codeblock is collapsing whitespace?

I'm trying to layout the following important program:

@codeblock|{
#lang planet dyoo/bf
   ***********
  *           *
  *  o>    <o  *
  *            *
  *  <<<<<<<<  *
   *          *
     ********
}|

Unfortunately, when Scribble gets its hands on it, the formatting of
the face is completely flattened against the left side of the screen.
I'm working around this by using verbatim instead, but wanted to
double check: is codeblock supposed to collapse space like this?