The label position is strange when the pie chart series data value is null.

[katherinebai]

Version

4.2.1-rc1

Steps to reproduce

Run the following option:

option = {
"animation": true,
"tooltip": {
"trigger": "item"
},
"legend": {
"show": true,
"orient": "vertical",
"align": "left",
"right": 5,
"top": "center"
},
"series": [{
"name": "Series1",
"type": "pie",
"selectedMode": false,
"stillShowZeroSum": false,
"data": [{
"value": 13,
"name": "DD000045",
"itemStyle": {
"borderColor": "#FFFFFF",
"borderWidth": 2,
"borderType": "solid"
}
}, {
"value": 7,
"name": "DD000048",
"itemStyle": {
"borderColor": "#FFFFFF",
"borderWidth": 2,
"borderType": "solid"
}
}, {
"value": 7,
"name": "DD000046",
"itemStyle": {
"borderColor": "#FFFFFF",
"borderWidth": 2,
"borderType": "solid"
}
}, {
"value": null,
"name": "DD000049",
"itemStyle": {
"borderColor": "#FFFFFF",
"borderWidth": 2,
"borderType": "solid"
}
}, {
"value": 5,
"name": "DD000047",
"itemStyle": {
"borderColor": "#FFFFFF",
"borderWidth": 2,
"borderType": "solid"
}
}],
"label": {
"show": true,
"position": "inside",
"color": "#000000",
"fontFamily": "'Arial'",
"fontSize": 14.67,
"fontStyle": "Normal",
"fontWeight": 400,
"borderWidth": 1,
"borderType": "solid",
"padding": 3
},
"labelLine": {
"show": false
},
"hoverAnimation": false,
"center": [186.668701171875, 144],
"radius": [72, 97.2]
}],
"color": ["#0087CD", "#8BB73D", "#EBC54B", "#EA772A", "#D03736"]
};

What is expected?

Label does not show on the left-top corner.

What is actually happening?

On the left-top corner, there is some strange text.

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