Bug Report

When I fly workers or fly volumes, the number of containers and volumes per worker reported by the CLI, coming from the /workers or /volumes endpoints, don't coincide with the prometheus metrics. I also noticed that when running multiple ATCs, there could be more than one ATC reporting for a single worker, where only one of those numbers reported is anywhere close to the number reported by the API. This makes reporting difficult, as I can't find a way to tell my Grafana which number to use, max(concourse_workers_containers) by (worker) only works if the number is always increasing. But maybe that's just my noobness with PromQL. Nevertheless, among the multiple numbers emitted by prometheus, none equal the API response.