Thank you for the clarification!
I am not aware of such problems, but it is a browser behavior, because the content area of RadEditor is a standard editable iframe/div element (ContentAreaMode property) and as such the Copy operation is entirely controlled by the browser.
Can you provide the HTML content that you load in RadEditor so that I can test it too?
My advice is to perform a simple test by loading the same content in an editable div or editable iframe
and pasting its content in MS Word.
Another test is to copy the contents of RadEditor from the Overview demo
and paste them in MS Word. Are you able to reproduce the problem.
Please also test the same in different browsers.
Get quickly onboarded and successful
with your Telerik and/or Kendo UI products with the Virtual Classroom free technical training, available to all active customers. Learn More.