I updated to the current master from github, so that the datepicker would use i18n::get_date_format for formatting the date.
I have set the format to German in the config.php: i18n::set_date_format('dd.mm.yyyy');
That works fine.
But if you mark the datefield as required you can't submit the form anymore. The jquery validation keeps complaining about the date.
Any idea what I could do?