I've just upgraded to QlikSense Server November 2018. The date picker works well when I pick dates off the calendar - except nothing happens when I click on the 'today - yesterday - last 7 days - etc'.
Re: QlikSense November 2018 - New date picker issue
I have found that the items on the left (Today, Yesterday, Last 7 days, last 30 days, this month, last month) work when the date field which the chart object is tied to (Properties > Field > Date field) has data that matches the condition. For example if you only have 2017 data in that field, then Today is not a valid selection and you cannot pick Today in the Date Picker. I loaded some January 2018 data and was not able to select any of these options. When I loaded all the dates for 2018, then I was able to use these items in the left side selection and they worked for me.