Trying to figure out how to stop a move of Outlook Email during drag and drop. I have tested in your sample code in the Dojo it is also happening there.
So what is happening is you drag and drop a email, which does work, but instead of making a copy and uploading that it pulls the email out of outlook completely. At first I thought this was a bug in outlook but I tried using the drag and drops of other sites using different browsers and they would not pull the email out of outlook. So I think it is an issue with Kendo UI drag and drop upload. Is this a known bug? Is there a workaround to fix this issue?