Grid data not rendering in virtual scrolling with paging scenarios

[zstoyanova9]

Description

In virtual scrolling with paging scenarios, the Grid displays a blank area at the top when dragging the vertical scrollbar very fast down and back up.

Steps To Reproduce

1. Open the "Virtualization with Paging" demo - https://www.telerik.com/kendo-angular-ui/components/grid/scroll-modes/virtual#virtualization-with-paging
2. Quickly drag the vertical scrollbar up and down multiple times.

Screenshots or video

Screen.Recording.2025-11-12.at.15.59.03.mov

Actual Behavior

A blank area at the top appears when dragging the vertical scrollbar very fast down and back up.

Expected Behavior

The expected Grid data should appear at the top when dragging the vertical scrollbar very fast down and back up.