My role assignment feature is set up to assign the role upon order "Complete" status. My Workflow-NG rule configuration for "Update order status on full payment" is set up and activated to update the order to "Complete" status upon $0.00 or less balance. I have a membership product which includes the role assignment feature.

When running tests of the purchase of the membership product, the order is successfully updated to "Complete" upon payment receipt however the role assignment is not automatically occurring. For some strange reason, I can get the role assignment to occur if I manually update an order from "Pending" to "Complete". So, seems there is an issue with the magic happening in the automatic role assignment.