Describe the bug
The position of the DropDownList's popup is not updated when the popup is opened above the component and the data items in the popup are filtered.

To Reproduce

1. Open this StackBlitz example in a new tab
2. Resize the browser's window in a way the DropDownlist is at the bottom of the visible area and click on the component to expand its popup. Because there is no space below the DropDownList, its popup should pop above the component
3. In the search box in the popup write "sm"

Expected behavior
The bottom of the popup should be constantly stuck to the DropDownList and not staying at it initial position above the compoennt.

Screenshots