[Xiaobai asks] about data updates in vue

[Xiaobai asks for advice]
Why do I sometimes not see the real-time change of data in the vue-devtools plug-in of the browser, but the value of the data,data of console does change, and it is found that the data in the vue-devtools plug-in will not change until the next 1-2 steps? How should it be solved?

addProp() {
  this.tablePropList = [];
  this.tableProp = [];
  this.selectedPropName = [];
  // -> [[1,2,...],[a,b,...],...]
  this.selectedPropList.forEach(item => {
    if (item.list.length) { //
      this.tableProp.push(item.list);
      this.selectedPropName.push(item.name);
    }
  });
  //
  let trProp = this.sortArr(this.tableProp);
  trProp.forEach(item => {
    this.tablePropList.push({
      prop: item instanceof Array ? item : [item],
      goodsSalePrice: "",
      goodsStock: "",
      stockWarning: ""
    });
  });
  // console.log(this.tablePropList);
},

I found that after adding a judgment statement, I can update it in real time. Why?

if (item.list.length) {...}
May.03,2022

some actions do not trigger view updates, is that the reason

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3bba7-4ef1f.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3bba7-4ef1f.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?