It has long been known that notifications and emails generated by Workflows in apps that are not yet deployed would automatically be sent to the app creator - regardless of the “To” field implementation.
That seems to no longer be the case - at least with Push Notifications. It appears I must add the app creator email address for the steps within the Workflow to successfully run.
If the app creator email is NOT inserted, the Workflow rule simply doesn’t run even though logs show the rule criteria is met. No errors are reported.
I wanted to provide more details but it seems the log entries are taking forever to show up and it seems that some log entries are getting dropped.