Ant Design Select组件下拉选项随页面滚动与Select框分离问题

<SelectP
     showSearch
     style={{ width: '100%' }}
     placeholder="单击进行搜索选择"
     defaultValue={value}
     optionFilterProp="children"
     getPopupContainer={(triggerNode)=>{ return triggerNode.parentNode}}///增加这个定位去解决
     onFocus={this.extShowOptionsPanel}
     disabled={disabled}
 >
{
options.map(op => {
return (
<SelectP.Option
key={Math.random()}
value={this.extGetOptionName(op)}
onClick={() => this.extOnSelect(op)}
>
{this.extGetOptionName(op)}
</SelectP.Option>
)
})
}
</SelectP>