This plugin breaks "template function" feature, see in docs http://marionettejs.com/docs/v2.4.1/marionette.itemview.html#itemview-render For my projects, I've added a line in the beginning to fix this: ``` Backbone.Marionette.Renderer.render = function (template, data) { template = _.isFunction(template) ? template(data) : template; ... ```