Owner not alerted if ticket created via Web UI`

This message was transferred with a trial version of CommuniGate™ Pro
Normally when someone is assigned ownership of the ticket they receive
email to alert them. However if someone creates a ticket via the WWW
interface and assigns it as part of the creation the owner isn’t alerted.

I tried using an “OnCreate” notify owner but that dosen’t seem to work.
Is this a bug or is there some sort of custom condition I need to use?