Drone_validate_plugin_endpoint

Drone docs make reference to this variable, but when I set it to a host:port which is reachable from inside the container I don’t get a hit to my http server. Drone community 1.2.1

https://docs.drone.io/server/reference/drone-validate-plugin-endpoint/

Read the change log, now I see it’s a feature starting in 1.4.0. Anything breaking between 1.2.1 and 1.4.0? I didn’t see anything in the change log … can I roll it back?