After setting up a new project, I created about 15 issues last night.
The people assigned the issues appear to have received notifications.
I as the reporter of the issues did not receive any notification, even though it is set to use the Default Notification Scheme.
We have checked our incoming mail servers and the messages did not arrive.
When I use the Notification Helper tool, none of the issues appear available in the drop down issue selector. Only one issue appeared there when it had no assignee. Once it had an assignee it disappeared from the list.