Free text search for faceted navigation skips the free text argument when fetched through Session#getItem(String absPath)

When 'facNavNode' is a faceted nav/search node then:

Node n = (Node)session.getItem("/content/documents/demosite");
n = n.getNode("facNavNode[

{foo}]");

works, but

Node n = (Node)session.getItem("/content/documents/demosite/facNavNode[{foo}

]");

does not work!

n = session.getRootNode().getNode("content/documents/demosite/facNavNode[

{foo}

]");

does work!