If the DEL key is pressed at the end of Row 1.1.1 - Row 1 - Row 1.1 - Row 1.1.1 - Row 2 - Row 3 then it looks like this (with two slashes -) - Row 1 - Row 1.1 - Row 1.1.1Row 2 - - Row 3 This is the answer from Telerik: I am afraid the result of the delete key press comes entirely from the browser. You can check out this example here: http://dojo.telerik.com/ejEfu. If you repeat the same steps, you will get the same results. This is how the browser interprets the deletion with del key in this scenario. The Kendo Efitor does not somehow interrupt the browser deletion functionality and currently has no control over the content that is deleted and replaced. You could possible suggest a feature request on the topic in the Kendo Feedback channel so that others can vote for your suggestion. The solution of that case would be the deletion commands to be controlled via custom editor commands (something that is not present currently).