Seems like this change now means that a boolean is returned and has led to the following error:
Uncaught TypeError: $checkboxes.each is not a function
at fn.updateState (form.js?_v=b9f32edd:1118)
at fn.init (form.js?_v=b9f32edd:1101)
at applyHandler (core.js?_v=b9f32edd:7567)
at...