Template query variable: values not fetched on dashboard load

I am experiencing an issue in a dasboard where the template query variable values aren’t fetched on dashboard load. No request is being made at all (verified by using the browser console). This leads to the dropdown being empty, and no data shown:


Lavel values are definitely there:

Grafana 8.5.0, the dashboard is being provisioned if that matters. Any idea what is going wrong would be highly appreciated.