Incorrect Agent version Alert/Banner
If someone upgrades from Ops Manager v4.2 -> v4.4 and then downgrades by reinstalling Ops Manager v4.2, there is no Alert or Banner that the Agent is incompatible.
Attempts to modify deployments with this incompatible Agent displays "Initializing Automation for your Deployment" but never actually does anything. It is only after reviewing the Ops Manager logs that you see "Unrecognized field".
It would be helpful if there was a validation check that displays an Alert or Banner that indicates that the version of the Agent is unknown/incompatible. Perhaps something similar to what is displayed after upgrading Ops Manager that will then properly deploy the correct version of the Agent.