angularjs bootstrap ui 0.13 datetimepicker doesn't pop up

Question

I'm trying to use https://github.com/zhaber/datetimepicker in my angular application but somehow datepicker doesn't pop up when input is clicked. Here's an example: http://plnkr.co/edit/FTwLPJiwxBC8eEHxJiT0?p=preview and the controller's content (rest you can find in plunkr):

 if(position==10){
   activity.loadMore();
}

Note: If I use 'ui-bootstrap-tpls-0.12.1.js' then popup does work, but I need 0.13.0