Alerts fire regardless of goal


I’m trying to set up alerts in Metabase (v0.31.1) to alert us to any sudden drop in figures. So I’ve been creating line charts with a goal line, and setting up alerts to fire only when the number ‘Goes below the goal line’, ‘Every time’ it crosses. However, I seem to get Slack alerts every time it checks even if the number hasn’t dropped below the goal line.

I’ve tried adjusting the settings and changing goal line values and the alerts seem to fire regardless of what I set things to. Anyone else run into this?

Incidentally, the alert setup UI seems pretty buggy - if I disable email alerts when creating the alert initially, that setting change isn’t saved. If I re-open the alert settings it will still have the email option enabled. If I toggle it off again it saves it correctly as off, but if I go to delete the alert then I need to check the box for ‘This alert will no longer be emailed to 1 address’ as well as the Slack channel even though it isn’t being emailed anywhere.