dojox.grid.datagrid - Dojo TabContainer doesn't get formatted correctly until after I do an Inspect Element -

i have dojo datagrid few rows of data. when click on row, have tabcontainer created in <div>. here's ends looking like:

the formatting tabcontainer incorrect. however, after "inspect element", formatting corrects itself:

however, submit button disappears after formatting corrected.

here's code use create datagrid , tabcontainer:

<div id="r_body">     <div id="r_list">      </div>     <div id="r_form">         <div data-dojo-type="dijit/form/form" id="parameters_form" data-dojo-id="parameters_form" enctype="multipart/form-data" action="" method="">             {% csrf_token %}             <div>                 <div id="r_tab_container"></div>             </div>             <div>                 <p></p>                 <button id="submit_parameters" dojotype="dijit/form/button" type="submit" name="submitbutton" value="submit">                     submit                 </button>             </div>         </div>     </div> </div>  <script type="text/javascript">     require([         "dijit/layout/bordercontainer",         "dijit/layout/contentpane",         "dojox/grid/datagrid" ,         "dojo/data/itemfilewritestore" ,         "dojo/dom",         "dojo/domready!"     ], function(bordercontainer, contentpane, datagrid, itemfilewritestore, dom){         // create bordercontainer top widget in hierarchy         var bc = new bordercontainer({             style: "height: 500px; width: 230px;"         }, "r_list");          /*set data store*/         var data = {           identifier: "id",           items: []         };           data.items.push({ id: 'some_id', description: 'some_description',          var store = new itemfilewritestore({data: data});          /*set layout*/         var layout = [[             {'name': 'title', 'field': 'description', 'width': '200px', 'noresize': true}         ]];          /*create new grid*/         var r_list_grid = new datagrid({             region: "left",             id: 'r_list_grid',             store: store,             structure: layout,             rowselector: '0px'         });          bc.addchild(rt_list_grid);          bc.startup();          list_grid.on("rowclick", gridrowclick);         function gridrowclick(evt){             var idx = evt.rowindex;             var rowdata = list_grid.getitem(idx);             var r_url = rowdata['url'][0];             var r_id = rowdata['id'][0]              require(["dojo/dom", "dojo/request/xhr", "dojo/dom-form", "dijit/layout/tabcontainer", "dijit/layout/contentpane", "dojo/ready", "dojo/domready!"],                     function(dom, xhr, domform, tabcontainer, contentpane, ready){                 var url = window.location.pathname + "dev/" + r_id + "/" + r_url + "/";                 xhr(url, {                     method: "get"                 }).then(                     function(response){                         var json_response = json.parse(response);                         var fields_dict = json_response['fields_dict'];                         var tc = new tabcontainer({                             style: "height: 100%; width: 100%;"                         }, "r_tab_container");                          for(var key in fields_dict) {                             var content_string = '';                             var fields = fields_dict[key];                             for(var field in fields) content_string += '<div>' + field + '</div>';                             var tcp = new contentpane({                                  title: key,                                  content: content_string                             });                             tc.addchild(tcp);                         }                          tc.startup();                     },                     function(error){                         //error stuff                     }                 );             });         }     }); </script> 

so what's going here , how fix tabcontainer formatting? thanks!

i had tc.resize(); after tc.startup();