Thank you for contacting Telerik Support.
Following the provided information, I was unable to reproduce the issue you are facing. Please refer to the attached gif file illustrating the behavior on my end with the specified version. I have attached my sample project. Could you please specify the exact steps how to reproduce the problem or get back to me with a sample project in the support thread that you have opened so I can investigate the precise case? Thank you in advance.
It is recommended to try Erwin's suggestion. Thus, you will find out whether you actually have event subscriptions.
I am looking forward to your reply.
Telerik by Progress