Grafana 11.3+: Variables of type Constant in Flux/InfluxQL queries lead to "No data" in visualisation

[log1-c]

What happened?

After upgrade to 11.3.0 Flux queries in dashboards stopped working when they were using variables.

What did you expect to happen?

Dashboards queries work as before.

Did this work before?

11.2.2 with security fix and after the downgrade to 11.2.3 data is shown (again)

How do we reproduce it?

1. Have a dashboard with a variable of type constant and a Flux query
   

2. This yields "No data" in the dashboard when adding the required variables to the URL
3. Changing the query to fixed values and it works (tested using "Explore" option of the datasource)
   

Is the bug inside a dashboard panel?

No response

Environment (with versions)?

Grafana: 11.3.0
OS: Ubuntu 22.04.5
Browser: Chrome

Grafana platform?

None

Datasource(s)?

InfluxDB v2.7.10

[mdetrano]

Same problem. Changed variable type from Constant to Custom, and this seemed to fix the issue for me...is that the correct way to update dashboards for this new version?

[chrnie]

I see the same problem with influxQL based dashboards and the fix to replace constant with custom also works here.

[tomabg]

also causes problems in icinga integration

[kamenskiyyyy]

The data is shown intermittently, sometimes No Data comes out after a reboot

Version: Grafana v11.2.2 (dbf571744d)

[tomabg]

problem still there with grafana=11.3.1

[tomabg]

problem still exist with grafana=11.4.0