a-select 设置 mode="tags" 绑定数据绑定的数据值是null时，默认选择一个空的值 #790
Description
- I have searched the issues of this repository and believe that this is not a duplicate.
Version
1.3.8
Environment
os:win10 Browser:Google Chrome 74 x64、Vue:2.5.2
Reproduction link
https://github.com/vueComponent/ant-design-vue
Steps to reproduce
<a-select mode="tags" placeholder="请输入用户" v-model="aa">
<a-select-option value="1">1</a-select-option>
<a-select-option value="2">2</a-select-option>
</a-select>
data() {
return {
aa:null
};
},
What is expected?
默认没有选择
What is actually happening?
实际有个一个选择出现
