Data cleared for MQTT source when dashboard updates

[gpabdo]

What happened?

When you have both a panel with a live MQTT data source and a DB query, every time the dashboard refreshes, it deletes any data from the live panel as well. This means the live panel will reset to empty every time the dashboard updates. (every 5, 10, 30 seconds or whatever)

What did you expect to happen?

Not lose data from live panels when the dashboard gets now data from other panels.

Did this work before?

Never seen it work

How do we reproduce it?

1. Add a live panel to a dashboard
2. Set "Set auto refresh interval" to some valie
3. Wait for the interval

Is the bug inside a dashboard panel?

No, dashboard itself.

Environment (with versions)?

Grafana: Grafana v10.4.1 (d94d597)
OS: MacOS 13.2.1
Browser: Safari 16.3 / Chrome / FireFox

Grafana platform?

Kubernetes

Datasource(s)?

MQTT 1.0.0-beta.4