Version

4.9.0

Steps to reproduce

You can choose official demo to reproduce the bug：https://echarts.apache.org/examples/zh/editor.html?c=area-rainfall
When you select a area in the same color markArea, you will find the markArea background color disappear.

What is expected?

it can show the markArea background color when I select a area in the same color markArea

What is actually happening?

When you select a area in the same color markArea, you will find the markArea background color disappear.

When you select a area across different color markArea, you will find the markArea background color display normal.