Northwind Traders Developer 2.2 Template event firing bug

Thank you for reporting that scenario. Although we do try to test things, your particular sequence of steps is one that we apparently didn't try out.
We presented the custom dialog for deleting Companies via the form to offer users an alternative to the standard, less than friendly, behavior. However, this is a different path that wasn't predicted during testing, showing the difficulty inherent in creating and fully testing an application.