I had this issue already in October of 2019 and the Asana Support reacted in hyper-speed and fixed the problem, which kind of impressed me
When rules were introduced, every rule that was triggered created an inbox message, which got pretty annoying cleaning up the inbox all the time. Anyway, as written above the problem got resolved. I am referring to my Feedback Turning off Inbox Notifications for applied rules - Product Feedback - Asana Community Forum
Since rules were launched, that could change the due date of a task, a few months ago, exactly the same problem occurs again. I use a rule to automatically shift all overdue tasks to the next day. Works great… but in the morning I need quite some time kicking out all of theses senseless notifications from my inbox.
Would it be possible to cancel all notification that rules generate? That would be a big relief.