Thanks for reporting the issue. We used the same ID for the first checkbox in the Theme example and the Disabled example. Will fix this.
Checkboxradio: Fixed duplicate ID on demo page
@Shreerang this sounds related to checkboxradio which is no longer being supported.
@ldeluca no this is just using making the mistake of using the same id twice in the demos it will be fixed by jaspers pr referenced above in 1.4.5