el-tree-select回显问题

如何解决el-tree-select回显只显示id不显示label的问题，需要添加:render-after-expand="false"属性：

<el-tree-select
  v-model="form.parentId"
  :data="deptOptions"
  :props="{ value: 'deptId', label: 'deptName', children: 'children' }"
  value-key="deptId"
  placeholder="选择上级部门"
  check-strictly
  style="width: 100%;"
  :render-after-expand="false"
/>