I have detected a small correction to be done on occasion for the calendar field with datetime format. Please start the demo workplace and
1. Open date input workpage
2. Popup one of the CALENDARFIELD with format datetime
3. Click several times on arrow to change the month
--> current month remains visible
4. Click on a day
--> You see that in the background, you paged to another month by the number of clicks.
So the correction would be to show the month paging in the foreground.
For format date, it works fine.