Just adding onto my experience with Ranga's point 2 observation on workflow steps having unwanted/unexpected drop downs. While my Workflow Manager Server is not HA, it is federated to a HA Portal and Enterprise. I would also like to know the cause of why a step that has not been configured to run in parallel (i.e., only having 1 path in and 1 path out) would result in the unwanted/unexpected drop downs.