Алексей

<b-tabs card v-model="tabActive" @changed="onTabChanged">
data(){
return{
tabActive: 0
}
  methods: {
  onTabChanged() {
      this.tabActive = this.tabs.length - 1;
    }
}

<tr>
          <th>{{WagonModel.number}}</th>
          <th> {{WagonModel.is_problem}}</th>
          <th>{{WagonModel.features}}</th>
          <th>{{WagonModel.volume}}</th>
          <th>{{WagonModel.tare}}</th>
          <th>{{WagonModel.type}}</th>
        </tr>
      </thead>
      <tbody>
        <tr v-for="wagon in WagonsModel" :key="wagon.number">
          <td>{{wagon.number}}</td>
          <td>{{wagon.is_problem}}</td>
          <td>{{wagon.features}}</td>
          <td>{{wagon.volume}}</td>
          <td>{{wagon.tare}}</td>
          <td>{{wagon.type}}</td>
       </tr>