All dashboards mysteriously disappeared

Not sure if this is malevolence or a bug in elasticsearch, but all our dashboards disappeared - twice now.
The .kibana/dashboard is empty now.

Has anyone seen this?

Maybe someone is deleting the index?
Check your logs for mentions of .kibana, if it's being created then that's the likely problem.

As I mentioned, index and rest of the types in the .kibana index are there but all dashboards and a few visualizations gone.

Then someone is deleting them, ES won't just remove things.