Even though a data is supplied in the code, it's not displayed - then when the user submits the form the datepicker field should show the date they selected. For example (from the dashboard homepage):

When the page loads the date/time appears very briefly, but user is left with empty box, when they select a date it's then displayed, but once form is submitted, the date is lost again

For info, I'm using Firefox, but get same issue on Opera. Possibly could be to do with supplying in the code the full date/time, whereas the datepicker just needs the date part?