sankey图中的links的value为0时连线中断

[catkinmu]

Version

4.6.0

Reproduction link

https://gallery.echartsjs.com/preview.html?c=xGC83VZS9&v=1

Steps to reproduce

option = {
series: {
type: 'sankey',
data: [{
name: 'a'
}, {
name: 'a1'
}, {
name: 'a2'
}, {
name: 'b1'
}, {
name: 'c'
}],
links: [{
source: 'a',
target: 'a1',
value: 5
}, {
source: 'a',
target: 'a2',
value: 10
},{
/此处连线中断，value不为0时可以显示连线/
source: 'a',
target: 'b1',
value: 0
}, {
source: 'b1',
target: 'c',
value: 2
}]
}
};

What is expected?

即使links中的value为0，也应该有一条连线

What is actually happening?

links中的value为0，连线中断

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