Hello,
No if you want to keep the scroll on the dialog, you cannot fix it with a css rule.
You have to trigger the scroll event on your dialog, and in the event function, you have to test if the focus is in the auto complete or not.
If the focus is in the auto complete field, cancel the event.
In the other case, make the default behavior.
It's a bug of the auto complete widget that should manage this case correctly :
Solution 1, on scroll, the list of the auto complete is displayed and the scroll is done on the list
or
Solution 2, the scroll event is ignored in the auto complete, but the list of value should be scrolled like the input field.
Regards,
Dominique VINCENT
http://www.toitl.com/