1. Open https://demos.telerik.com/kendo-ui/spreadsheet/index
2. Copy from F3:F15
3. Paste as value (ctrl+shift+v) in H3
4. See it pasted only non-empty cells
Empty cells values should be pasted as well as Excel does.
Paste as Values (Ctrl + Shift +V) is a browser specific feature, which
currently works only in Chrome and Firefox. It is not working in IE and Edge for example. Previously it was working
only in Chrome as I commented in Allow the Spreadsheet Copy - Paste of only values (no formatting) from Excel, when testing it in 2017. The Paste values scenario was implemented as a Knowledge Base article, handling the paste event. This is the recommended way to handle this scenario and it works on all browsers. The currently logged issue is not reproducible when using the knowledge base article approach.
Indeed, the reported problematic behavior is a bug. This ticket was converted to a BugReport, visible in our Feedback Portal.
In addition, I have updated your Telerik points for reporting for that problem.
Please excuse us for any inconvenience caused by the bug.