nuxeo-date-picker is showing one day more instead the day that it's really stored in the database

Steps to reproduce:

• Use a nuxeo-date-picker to edit a date in the create or edit form of a document type:

      <nuxeo-date-picker value="{{document.properties.dc:expired}}" 
                         label="[[i18n('label.dublincore.expire')]]" 
                         role="widget">
      </nuxeo-date-picker>
  

• Select a day in the calendar, e.g.: 08/12/2018
  
• Save your changes
• Use the Export to JSON option in Nuxeo Dev Tools
• Check the date of the field that you have modified, e.g.: dc:expired. It's storing one day before the selected date

     ...
      "dc:expired": "2018-12-07T23:00:00.000Z",
     ...