Version

v5.1.1

Reproduction link

https://qp9zl.csb.app/

Steps to reproduce

render with option

const option = {
        grid: {
          show: true,
          borderWidth: 3,
          borderColor: "#000000"
        }
      };

What is expected?

corner closed

What is actually happening?

corner not closed