jquery datepicker with datatable

Jquery datepicker in the datatable,
It doesn’t work after I am trying to change month.
The error is ‘Uncaught Missing instance data for this datepicker’

Click the ‘start_dt’ field in the example please.
https://snippet.webix.com/jwqxq9za
(this example doesn’t work well in ‘showOn:focus’ so I turned to ‘showOn;button’ do you know why?)

additional description:

Is there any way?
I am the person that chose this webix as our project’s library, but some part makes trouble compared to other tested library. (I have more question such as IE edge problem but I need preparation.)
I am in desperate. TT.
I hope you to help me.