groovydoc does not show class hierarchy correctly

Attachment bug1.zip contains 2 groovy projects ("foo" and "bar") plus an ant project (under folder "ant") to perform the groovydoc. I've tried groovydoc by:

• running "ant" in the "ant" folder (I used apache-ant-1.8.4)
• running "build.xml" as an Ant Build in eclipse (I used juno-4.2)
  The documentation is written to the folder "doc". I used "ant" for the attachment version.

The build.xml copies the groovy files to a separate folder before invoking groovydoc. AFAICS this makes no difference to this problem - I get the same if I direct groovydoc to use the groovy files in their project folders.

Class bar.Deriv is defined like this:

package bar
class Deriv extends Base {
}

The page for bar.Deriv (doc/bar/Deriv.html) shows the hierarchy as:

java.lang.Object
  foo.Base
      bar.Deriv

However, bar.Deriv derives from bar.Base, not foo.Base.

If you create the documentation yourself and find that groovydoc gets the hierarchy correct for bar.Deriv, try looking at the page for foo.Deriv (doc/foo/Deriv.html). It will get that one wrong instead.

I think this is wrong: groovydoc should be able to resolve the base class to the correct package.