Title basically says it all. Issue can be easily observed in the basic Multiselect with virtualization example:

1. Open the dropdown
2. Scroll to the bottom end
3. Close the dropdown
4. Open it again - popup's scroll position is incorrect and therefore shows blank.

What seems strange is that I cannot reproduce this issue with the combobox virtualization, although I found a somewhat similar bug submitted for the combobox - https://github.com/telerik/kendo-react/issues/1450