Wrong links (overwritten_from) depending on project folder structure

[alexander-alvarez]

My project structure is:

backend_module_1/
backend_module_2/
fontend_code/
    yuidoc.json
    package.json
    ...

The relevant parts of yuidoc.json:

{
  "url": "http://www.github.com/<org>/<repo>",
  "paths" : [ 
       "app"
   ]
}

and when clicking "Defined in " links, I get sent to:
http://www.github.com/<org>/<repo>/tree/<sha>/app/<path_to_class>, but I want to be able to go to
http://www.github.com/<org>/<repo>/tree/<sha>/frontend_code/app/<path_to_class>

the following also didn't work:

{
  "url": "http://www.github.com/<org>/<repo>",
  "paths" : [ 
       "../frontend_code/app"
   ]
}

because the sha gets gobbled like so:
http://www.github.com/<org>/<repo>/tree/frontend_code/app/<path_to_class>

Couldn't find a setting to enable this, or is this a bug?