Technote Details :: Special characters in MX Widgets interfaces require UTF-8 encoding
Issue
After I applied a Date Picker widget on one page, after I have changed the language, special characters are not displayed correctly.

Reason
This happens because the page encoding is not set appropriately with the used language.
Solution
To solve this issue, open the page containing the Date Picker. In the code, in the page header locate the meta definition where the charset is defined. Replace the default one with UTF-8 and all will be displayed correctly.