I have two list boxes in a container. I have not checked the sort by state box, so that the values stay in place when they are selected.
In desktop mode, both show whatever is selected as the first row at the top (there are more values if you scroll up, but selecting a single value makes that value appear at the top).
But when I slip into Web mode (and on the AJAX client) the boxes don't have that behaviour, the Top line that appears is the highest value of the list box. It just returns to the top... no matter what I select.