Clockpicker extension - no callbacks are triggered

Hi,
I am using: andrasph:clockpicker package.
It works well, popups and after selecting time, time appears on the input, BUT none of the optional callbacks is triggered.
I have tried to wrap it with Tracker.autorun or Meteor.defer, but it didn’t help.
Does anyone use it and it works for him? Or any idea of how to solve it?
Thanks.