Very recently, and I swear nothing has changed that should affect this - (I checked the audit log too), notifications on Create have stopped being sent for one workflow/project.
The assignee is set using the component, to an email group.
All other events seem to fire fine and send email to this group.
I checked the post function on create and it has the fire event Issue Created last
I checked the notification scheme is assigned to the project and that Issue created notification has current assignee.
On JIRA 6.3.12
Help!