Hello,
I found bug in Filtering with Remote Data and Virtualization (https://www.telerik.com/kendo-react-ui/components/dropdowns/combobox/filtering/#toc-filtering-with-remote-data-and-virtualization/)
Mouse wheel:
When user is trying to scroll to the bottom of the list he will scroll the same data before last items for 3-4 times until he will be able to see the last element on the list (look for "Paul Henriot" on the list, this item is visible for 3-4 scrolls until last item is visible)
Keyboard:
When user is trying to navigate to the last element with keyboard he will reach to the 3rd last element and list will not scroll to the next 2 elements, he needs to go back to the last visible element and navigate down, and repeat this process for 3-4 times until list is scrolled and last element is visible
This bug happens in both ComboBox and DropDownList
I attached 2 videos to showcase this bugs