Symptoms
Thai Date is 6 สิงหาคม 2558 and it was saved to 2015-08-06.
However, calendar control displays the date incorrectly:
6 สิงหาคม 2015 .
Diagnoses
We have identified this as a bug. Which version, if any, a fix will be included in has not been determined at this time. Product Management makes these decisions based on criticality, customer demand, and other factors.
Resolution
The current workaround would be to change the data type from Date to DateTime