AddType problem, custom types doesn't work when editor init

Notice some probleme with addType functionality

If I create some custom type like this:

editor.DomComponents.addType('widget', {
     model: dModel.extend({
                defaults: _.extend({}, dModel.prototype.defaults, {
                    type: ComponentId,
                    tagName: 'div',
                    classes: ['widget'],
                    productId: 1
                }),

                initialize: function(o, opt) {
                    dModel.prototype.initialize.apply(this, arguments);

                    var toolbar = this.get('toolbar');

                    toolbar.unshift({
                        attributes: {
                            class: 'fa fa-gear'
                        },
                        command: 'widget-settings'
                    });

                    this.set('toolbar', toolbar);
                }
            }, {
                isComponent: function(el) {
                    var result = '';
                    if (el.tagName === 'DIV' && el.className.indexOf('widget') !== -1) {
                        result = {
                            type: ComponentId
                        };
                    }

                    return result;
                }
            }),
view: dView
})

When we add component widget on page , it work good But after save content to the server and reload page custom type doesn't apply because Parser don't have this type^ use only default types, so in widget type don't call isComponent method

here: https://github.com/artf/grapesjs/blob/dev/src/parser/model/ParserHtml.js#L131

Do you know this bug?

Possible solution is add some middleware here to add custom types and components to instance before call init

https://github.com/artf/grapesjs/blob/dev/src/index.js#L52 *