[Bug] Panning on chart with zoom/scroll bars is jumpy

[StijnWillemse-Ontoforce]

Version

6.0.0

Link to Minimal Reproduction

https://echarts.apache.org/examples/en/editor.html?c=scatter-nebula

Steps to Reproduce

Repro steps:

• Open tis chart example: https://echarts.apache.org/examples/en/editor.html?c=scatter-nebula
• Zoom in on this chart to around the following range:
  X-axis: [-35, 7]
  Y-axis: [-82, -130]
• Using your cursor click and drag the chart horizontally such that the max displayed value on the x-axis changes from something below 7 to something above 7. (on the canvas! The issue cannot be reproduced when using the zoom/scroll bars)

Current Behavior

The Y-axis jumps to a different range than I originally was zoomed into. On this example chart it is not that much of a jump, but on sometimes the jump can be quite large and even jump outside of the possible Y-axis range! I also see this on custom charts.

Expected Behavior

The panning works the same as if I were to use the scroll bars

Environment

- OS: macOS 15.5
- Browser: Arc
- Framework: Your examples websites

Any additional comments?

No response

[helgasoft]

not-a-bug.
When using the toolbox zoom, the cursor changes from a hand to a cross and enters zoom-in mode. After the first zoom-in it remains a cross which means you may continue to zoom in, not pan. To disable zoom-in mode, press on the toolbox icon again and the cursor will turn into a hand icon. Then you can pan the zoomed view.

Example - zoom-in around the red point and practice pan.

[StijnWillemse-Ontoforce]

I'm not using the zoom functionality. I am just panning horizontally and sometimes (not sure what the trigger is) is jumps vertically. I have a screen recording attached that shows the issue around your red dot. All I do with my mouse is click and drag to pan horizontally. So the canvas shouldn't jump vertically.

Screen.Recording.2025-09-18.at.09.08.41.mov

[helgasoft]

Zoom is needed first, otherwise pan would not work at all.
I agree that there is a bug 🐛 with inside dataZoom pan. I can confirm the "jumps".
Here is a pre-zoomed (faster loading) chart where the effect is reproducible - Demo.

[StijnWillemse-Ontoforce]

Yes this is closer to what we are experiencing in our specific set up. With the data points you are looking at jumping completely out of frame. For a few of our use cases, users have to zoom in quite a bit which seems to exacerbate the problem. Thank you for sparing with me and confirming it is indeed a bug in ECharts and not an issue on our side. 🤝