We noticed that some confluence cloud instances dont deliver any page_viewed events to our connect application that the admin had installed - this is even though the connect descriptor lists the page_viewed event in the webhooks module. We see that the other events listed in the webhooks module get delivered for these confluence instances. Also we see the page_viewed event is delivered in other instances for the same descriptor.
Is there a reason why page_viewed is not delivered for some confluence instances even if the descriptor specifies it?