Dear Concerned,
1. Launch https://demos.telerik.com/kendo-ui/spreadsheet/index
2. Start editing cells D3 to D11 as fast as possible (like type 45 enter, 45 enter, 45 enter and so on) (refer attached videos)
3. UI freezes for few seconds, and then all cells get updated in one go
4. But Excel 365, Excel and GoogleSheet work fine in such cases
5. Please make similar UI behavior as in Excel.
Check attached Excel Data Entry & Kendo Data Entry video recordings