Bug report: Phantom Push notifications macOS

I get phantom push notifications for a recurring task that was deleted a while back. Originally the task would repeat every Thursday. The task is gone, but every Thursday the push notification still arrives!

Is there a way to stop this?

SessionID: CDD38937-135C-40A0-BAC2-409E0754E76C; UserID: 29e65127-faab-45a5-b4bf-776f9e45fdd9

BTW: Where did the in-app bug reporting tool go?

Thanks,

Ben.