I've found that using Chrome a simple demo page (showing the house model) didn't visualize anything. Blank canvas. Inspecting console errors I've found messages about unexpected < token at line 7 in several .js files. I suppose that it's an issue caused by a recent CSS syntax revision, but really haven't any idea.

The problem seems to be in the CSS class pre-code definition, spread throughout the source files, that looks like:

pre.code
{
	display: inline;
//	padding: 8px;
//	border: 1px dashed #ccc; 
	background-color: #4AA02C;
}

My Netbeans IDE detected a syntax error in sources, so as it suggested I changed this definition in every .js file to make it look like this:

pre.code
{
	display: inline;
/*	padding: 8px;
	border: 1px dashed #ccc; */
	background-color: #4AA02C;
}

Everything worked fine, now the model is shown (and manipulated) as expected.
The bug propagates from the default.css template in /doc_generator/templates/jsdoc/static