Image renders before panel data is loaded

[bakerds]

What happened:
Since upgrading beyond Grafana 11.2.2, image rendering is broken for panels that load slowly. The rendering completes, but it happens before the panel data is loaded, so we see an empty panel with the loading animation visible at the top. Panels that load very quickly render fine.

For example, this panel takes 1.5 seconds to load in the browser, and image rendering happens before data is loaded:

Edit: Actually, I can reproduce this with a panel that loads in 75 ms as well 😢

What you expected to happen:
With Grafana 11.2.2 and prior versions, these panels rendered ok.

Is there a way to wait for data to finish loading before rendering? If not, is there a configurable parameter to simply delay rendering by a few seconds?

How to reproduce it (as minimally and precisely as possible):
In the browser, I'm using the menu option, "Share" > "Direct link to rendered image"
There are no weird URL parameters involved.

Environment:

• Grafana Image Renderer version: 3.11.6
• Grafana version: 11.4.0, 11.3.1, 11.3.0
• Installed plugin or remote renderer service: plugin
• OS Grafana Image Renderer is installed on: Rocky 8.10
• User OS & Browser: any/all

[AgnesToulet]

We do have some code to wait for the panel to load before rendering but you may have encounter a corner case where it doesn't work. Can you share your dashboard JSON or at least some panel info (datasource and panel type). Can you also confirm that you didn't disable the scenes feature toggle? (This should be enabled by default from v11.3.0)

[hirenko-v]

We have a similar problem with Grafana 12 and the latest image renderer.
When the image renderer generates an image, it does not take into account the latest data.
I think there should be some delay to get an update on the panel.
Screenshot represent data right before the alert

[Proximyst]

Given there is little to no movement on this bug report with insufficient information to do anything, we're closing this. Please feel free to open a new bug report if there is a persistent problem!