In fact you've just found a defect. I'll try to explain...
To declare constructor and its parameters you have to use @constructor
tag as follows:
/**
* @class Foo.Bar
* The description for my class
* @namespace Foo
* @constructor
* @param {Object} configA This is my config
* @param {Object} configB This is another config
*/
Foo.Bar = function(configA, configB) {
/**
* @property
*/
this.myProperty = null;
/**
* @method
*/
this.myMethod = function(){};
};
Here you can see one more @method declaration.
The problem is - if you remove this @method - constructor docs will
not appear!
Try to do it. It would be good if you submit issue to the issue list.