autocomplete and datepicker different behaviours inside dialogs

Hi,

if you play a little with this fiddle http://jsfiddle.net/Nb76L/ you will notice that autocomplete and datepicker behave in two different ways when used inside dialogs.

I notice that:

• if you drag the dialog window, the datepicker closes itself, while the autocomplete follows the dialog

• datepicker is always appended to "body", while autocomplete by default is appended to the element container

• if you set the "appendTo: $('body')" option to the autocomplete to make it behave like datepicker, it will not behave correctly (to me, it shows on the back of the dialog, using chrome 27.0.1453.94 m).

I think that the two elements should behave the same way, and personally i prefer the DatePicker behaviour, this is why i opened this ticket as an autocomplete bug.

I'm playing with the appendTo option because in my application when the autocomplete is created inside a jqdialog (used by jqgrid) it is cut inside the boundaries of the jqdialog.