In Add Event dialog the DatePicker popover when changing the date(opening the popover) and clicking in free space hides the popover, but it stays open, just hidden.
"In Compiz" it shows both DatePicker popovers when selecting the other.
"In Gala" the popover is just hidden under the focused window. (be it Maya or Add Event dialog.)
So to continue normal work dates in all open popovers must be selected.
In Add Event dialog the DatePicker popover when changing the date(opening the popover) and clicking in free space hides the popover, but it stays open, just hidden.
"In Compiz" it shows both DatePicker popovers when selecting the other.
"In Gala" the popover is just hidden under the focused window. (be it Maya or Add Event dialog.)
So to continue normal work dates in all open popovers must be selected.