Why is only the last iteration of the v-for output?

Question

Vue.js

Why does v-for output only the last iteration?

<el-table-column>
   <template v-for="(item, key) in managers" slot-scope="props">
      <table class="template-table">
         <thead class="stable">
            <tr>
               <th>{{ item.name }}</th>
               <th></th>
               <th></th>
               <th></th>
               <th></th>
            </tr>
         </thead>
      </table>
   </template>
</el-table-column>

Answer 1

v-for= is added to the element that needs to be drawn multiple times.
And in this code it turns out that it draws several tables with one line. v-for=tr

Answer 2

For <el-table-column>one template render is intended. If you want to iterate the columns of the table, then the v-for
iteration must be written in<el-table-column>