Calendar - It does not pick the date of the clicked day for the modal window

when I click on the calendar to add an event, the modal window will always show today’s data. never the date on which I clicked.
The header shows
And todays data, not matter where I click on the calendar.

This is a fresh installation. Should I try to troubleshoot or make new installation (google does not sync, and there is plenty of times we read, undefined).