Hi Nalla,
It should work if StartswithDate is set.
Please create an action and attach to the event "OnStartDateChanged" of date navigator.
On clicking of arrows it should trigger. Hence please set an external breakpoint and check WDEVENT parameters for start data and end date.
Please go through the standard demo component WDR_TEST_UI_ELEMENTS and test for DateNavigator element
Try to set "monthsPerRow" value to 1 and apply changes.
Check if it works in there.
Regards,
Rama