I have a problem with the datepicker. Instead of updating the date in the Slovenian locale it uses the default locale.

Explanation:

When I pick a date where the first three letters of the month in Slovenian notation don't match with the English locale (ex. ENG: 13-Oct-2004, SLO: 13-Okt-2004), the page responses:

*********************************************************************************
You did not enter a valid date. Please enter the date in the format "d-MMM-yyyy".
Due Date: <textbox>
*********************************************************************************

Then I have to change the month, for example: Oct -> Okt

On the other side, if the first three letters of the month match in both languages,
(ex. ENG: 13-Sep-2004, SLO: 13-Sep-2004), Jira accepts it, of-course.

Do I have a wrong configuration?