dust-linkedin browser vs node rendering: object[property] instead of object.property

I'm playing with dust examples on dust test page http://linkedin.github.com/dustjs/test/test.html and in the same time in node.js (0.8.15), express.js(3.0.4), consolidate(0.0.5), dust-linkedin(1.1.1).

If I execute my template on dust test page (see link at the top) it works well:

<a href="/en/subjects/subject-1-page-id">subject 1 title en</a>

It renders subject 1 title en

If I execute my templte on node/express/consolidate/dust is shows:

<a href="/en/subjects/subject-2-page-id">{locale[lang].title}</a>

It renders {locale[lang].title}

here is my template:

{#subjects lang=language}
<div>
    <img src="/files/subjects/{logo}" />
    <div>
        <a href="/{lang}/subjects/{pageId}">{locale[lang].title}</a>
    </div>
</div>
{~n}
{/subjects}

here is my JSON object:

{
    language: 'en',
    subjects: [
        { 
            logo: 'subject1.jpg', 
            pageId: 'subject-1-page-id', 
            locale: { 
                en: { title: 'subject 1 title en' }, 
                fr: { title: 'subject 1 title fr' },
            }
        }
    ]
}

here is rendered template from dust test site:

<div>
    <img src="/files/subjects/subject1.jpg" />
    <div>
        <a href="/en/subjects/subject-1-page-id">subject 1 title en</a>
    </div>
</div>

here is rendered templete from node/express/consolidate/dust-linkedin

<div>
    <img src="/files/subjects/subject1.jpg" />
    <div >
        <a href="/en/subjects/subject-1-page-id">{locale[lang].title}</a>
    </div>
</div>

here is the part of compiled template from dust test page (see link at the top):

.write("\">").reference(ctx.getPath(false, ["locale", ctx.get("lang"), "title"]), ctx, "h").write("</a></div></div>\n");

and here is the part compiled on server when I'm using {locale[lang].title}.

.write("\">{locale[lang].title}</a></div></div>\n");

and here is the part compiled on server when I'm using {locale.en.title}

.write("\">").reference(ctx.getPath(false, ["locale", "en", "title"]), ctx, "h").write("</a></div></div>\n");

If I try to render {locale.en.title} on node - it works.

Please note lang variable always works in the <a href='/en/ ...> link

And my question is : why in browser dust parse my path well, but on node doesn't work? Or, how to render object using 'array-like' key access