Datepicker direction in position fixed block

Hi,

I have a block positioned fixed at the bottom of the page.

In this block I have an input text with the Datepicker attached.

'direction' is set to 'up'

It works fine if there is no scroll, but it opens 'down' otherwise.

I think it is a bug, what I am not sure is if the bug is in the Datepicker plugin or in the JQuery UI.

Would be great to have a workaround if the bug is confirmed.

Regards,

Ivan