See screenshot. The metrics for hydrator plugins don't show up in the UI or the metrics tab for hydrator pipelines when there are special characters in the stage name.
looks like you were right, it's the stage names. And they never show up. Even after refreshing the UI.
could you verify whether this is a UI or backend issue?
Needs server side change to decode API query. Have opened jira for this.
Closing jiras older than 2+ years of not being updated.