jimmykane opened a new issue, #21634: URL: https://github.com/apache/echarts/issues/21634
### Version 6.1.0 ### Link to Minimal Reproduction https://codesandbox.io/p/sandbox/tender-merkle-ymcjr9?file=%2Fsrc%2Findex.js%3A4%2C51 ### Steps to Reproduce Steps to Reproduce Open the ECharts examples editor: https://echarts.apache.org/examples/en/editor.html Paste the minimal reproduction snippet. Ensure the page is running ECharts 6.1.0. Keep useDirtyRect: true. Hover/move the mouse across the chart so the tooltip axis pointer updates. ### Current Behavior When hovering the chart, parts of the dense line series visually disappear or render as broken/dashed segments. The underlying data is still present, and the tooltip continues to resolve values, but the canvas repaint appears corrupted around axis-pointer updates. The issue disappears when either: useDirtyRect is set to false the tooltip axis pointer is disabled ### Expected Behavior Hovering should only update the tooltip and axis pointer. The line series should remain visually continuous and unchanged while the pointer moves. ### Environment ```markdown - OS: OSX - Browser: ALL - Framework: ANgular ``` ### Any additional comments? This appears to be a regression in ECharts 6.1.0. The same chart behavior worked with ECharts 6.0.0. The affected setup uses: canvas renderer useDirtyRect: true dense line series showSymbol: false progressive rendering visualMap piecewise coloring tooltip with trigger: 'axis' tooltip axisPointer.type: 'line' For our app, disabling dirty rect hurts performance, and disabling the axis pointer removes useful chart feedback, so neither is a good long-term workaround. <img width="387" height="258" alt="Image" src="https://github.com/user-attachments/assets/ccfe1252-11a5-4947-8241-829a435e1f67"; /> -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
