Version

5.1.2

Steps to reproduce

1. Create a Pie chart

• https://echarts.apache.org/examples/en/editor.html?c=pie-simple

2. Open it in firefox
3. Switch to SVG renderer

What is expected?

The expected result is to show the tooltip on hover of arc also, not only on the legend for firefox, as it works fine in chrome

What is actually happening?

When hover of the Pie chart opened in firefox, the tooltip shows only when we hover on the legend, rather it should show even when we hover on the arc