关于ElementUI el-table 鼠标滚动失灵的问题及解决办法

<template>
  <el-table ref="tabledata" :data="tabledate" height="400" @cell-mouse-enter="mouseEnter" @cell-mouse-leave="mouseLeave">
    <el-table-column type="selection"></el-table-column>
    <el-table-column label="序号" prop="id"></el-table-column>
    <el-table-column label="英文名" prop="value"></el-table-column>
    <el-table-column label="中文名" prop="label"></el-table-column>
  </el-table>
</template>
<script>
export default({
    name:'tableDemo',
    data() {
        return{
            table_interval:null,
            tabledate:[
                {id:'1',value:'right',label:'正确'},
                {id:'2',value:'wrong',label:'错误'},
                {id:'3',value:'rightorwrong',label:'正确or错误'},
                {id:'4',value:'right',label:'正确'},
                {id:'5',value:'wrong',label:'错误'},
                {id:'6',value:'rightorwrong',label:'正确or错误'},
                {id:'7',value:'right',label:'正确'},
                {id:'8',value:'wrong',label:'错误'},
                {id:'9',value:'rightorwrong',label:'正确or错误'},
                {id:'10',value:'right',label:'正确'},
                {id:'11',value:'wrong',label:'错误'},
                {id:'12',value:'rightorwrong',label:'正确or错误'},
                {id:'13',value:'right',label:'正确'},
                {id:'14',value:'wrong',label:'错误'},
                {id:'15',value:'rightorwrong',label:'正确or错误'}
            ]
        }
    },
    methods: {
        //数据滚动
        dataScrolling:function(){
            var table=this.$refs.tabledata;
            var top=table.bodyWrapper;
            this.table_interval=setInterval(() => {
                top.scrollTop+=1;
                if(top.clientHeight+top.scrollTop==top.scrollHeight){
                    top.scrollTop=0;
                }
            }, 100);
        },
        //鼠标进入，停止滚动
        mouseEnter:function(){
            clearInterval(this.table_interval);
            this.table_interval=null;
        },
        //鼠标离开，开始滚动
        mouseLeave:function(){
            this.dataScrolling();
        }
    },
})
</script>