[Bug] Misdrawing in the Sankey chart

[kitee0325]

Version

5.5.0

Link to Minimal Reproduction

https://echarts.apache.org/examples/zh/editor.html?c=sankey-simple

Steps to Reproduce

1.jump to the link 2.hover the link from a to a2 3.an abnormal blank appears

Current Behavior

have an abnormal blank appears

this blank maybe because of

Expected Behavior

Complete link(side) without blank

Environment

- OS:
- Browser:
- Framework:

Any additional comments?

No response