Playbooks not triggered by alerts since 1 am

It appears that we have multiple Sentinel instances where the alerts did not trigger the associated playbooks since around 1:00 am EST (Nov 17). When trying to see what playbook is associated with the alert, we get a timeout like the one below:

Confirmed affected regions are East US, Canada Central but UK regions seem fine. 

Will open a ticket with Microsoft but is anyone else experiencing this? https://status.azure.com/en-us/status shows all green.