I am using cdk-virtual-scroll-viewport in my mat-autocomplete. scroll works fine whenever scroll using mouse but not working whenever pressing keydown button.
Expected Behavior: If the focus goes beyond the visible viewport, the list should automaticly scroll down/up
Actual Behavior : It just doesn't scroll, and if the end of the actuall renderd items is reached, it comes back to the start and doesn't render new items.
like in this link : https://stackblitz.com/edit/angular-5rmvpq
