Uncaught Type Error when mobile false enabled

[robico]

Everything loads fine on desktop but when the mobile: false setting is set in the init code, I get the following error:

"Uncaught TypeError: this.boxes.push is not a function" from wow.js:1:4068

The init code is:
(function ($) {
new WOW({offset: 100, mobile: false}).init();
})(jQuery);