Hi,
I geuss I found a bug.
Effect: The Datetimepicker and the Datepicker doesnt pop on click, if the parent region have a high Zindex!
(The Timepicker pop's up normal)
How can you check this?
Create a new form
drop a region
drop a datetimerpicker on the region
change the Zindez of the region to 10
Execute and see what happens...