problem with data-show-columns="true" when using tfoot tag html

[Vn-ChemGio]

Hi! Thank for your project, But I have a problem with your project! When I using atributte data-show-columns="true" -Case 1: if my Table had not tfoot (footer of table) , no problem found -Case 2: if I include tfoot tag in my table and using this atribute, when I hide some collum, cell of collum in tfoot tag had not been hidden Can you tell me how to fix! My table Struct

<table class="table-bordered table-hover  table-primary mb30" id="table" data-toggle="table"  data-show-refresh="true" data-show-toggle="true" data-search-align="none" data-show-columns="true" data-search="true"  data-select-item-name="toolbar1" data-pagination="true" data-pagination-v-align="bottom" data-sort-name="id" data-sort-order="asc" >
										<thead>
											<tr>
												<th data-field="id" data-sortable="true" data-class="text-right">STT</th>
												<th data-field="sml" data-sortable="true" data-class="text-right" >Máy Lẻ</th>
												<th data-field="phone" data-sortable="true" data-class="text-right">Số Di Động</th>
												<th data-field="name" data-sortable="true" data-class="text-right">Họ Và Tên</th>
												<th data-field="email" data-sortable="true" data-class="text-right">Thư điện tử</th>
												<th data-field="chucvu" data-sortable="true" >Chức Vụ</th>
												
										</thead>
										
                            <tfoot>
								<tr>
									
                                       <td>Total</td>
                                       <td>System Architect</td>
                                       <td>Edinburgh</td>
                                       <td>61</td>
                                       <td>2011/04/25</td>
                                       <td>$320,800</td>
                                   </tr>
							  </tfoot>
                               <tbody>
                                   <tr>
                                       <td>Tiger Nixon</td>
                                       <td>System Architect</td>
                                       <td>Edinburgh</td>
                                       <td>61</td>
                                       <td>2011/04/25</td>
                                       <td>$320,800</td>
                                   </tr>
                                   
                               </tbody>
                           </table>

Any body can help me??? /Thank regard