Dialog Height style is auto until drag

Dialog Height style is auto until drag


I have a dialog window that I have defined as:
var top = 50;
var left = 35;
$('#commandMenu').dialog({
    draggable: true,
    height: 70,
    width: 180,
    position: [left, top]
});
When I open the dialog box and firebug inspect it the style for the
height is auto. Once I have dragged the dialog the height gets set to
the right size. Is there some setting that I am missing that tells it
to resize on the first open?
I'm using the latest 1.3.2 of jQuery and the 1.7.1 or jQuery UI.