XdevDateTextField creates the wrong date

1. Create a new XdevWindow with one XdevDateTextField.
2. Start the application.
3. In the XdevDateTextField select the 31.10.2016 and click on "OK".

4. Open the popup again and switch the month to "November".

5. Click on "OK".
6. The selected date in the XdevDateTextField is now the 01.12.16 and not the 01.11.16.