There is an issue with the Date type fields validation in the Spreadsheet.
Here are the reproduction steps:
1. Open https://demos.telerik.com/kendo-ui/spreadsheet/index
2. Import attached xlsx file.
3. There are two date cells (B1 & B2), B2 has a data validation (Date between B1 to ToDay)
4. Try to edit the date using the calendar icon from B2. An empty calendar appears
Note: If I change data validation (remove reference of B1 and put hardcoded date) as below then it works.