title: Combo is not taking proper width in ExtJS 4.1
body: <p>I have recently upgraded my Ext version from 4.0.7 to 4.1</p>
  
  <p>I have Grid with combo attached at the top using "tbar" config. 
  Now the problem that I am facing is even if there is data or no data , my combo is not taking proper width. I have given width then also it is not working properly.</p>
  
  <p>I have attached image for reference please have a loot at it.</p>
  
  <p>Here is my Grid Code </p>
  
  <pre><code>Ext.create('Ext.grid.Panel', {
  id: 'SourceGridPanelId',
  forceFit: true,
  autoScroll:true,
  store: sourceGridStore,
  sortableColumns:false,
  enableColumnHide:false,
  tbar: createSourceSiteCombo(sourceSiteStore)
  </code></pre>
  
  <p>Here is my Combo Code</p>
  
  <pre><code>var sourceCombo= Ext.create('Ext.form.ComboBox', {
  id: "sourceSiteID",
  fieldLabel:'Select Site',
  inputId: "sourceSiteID_input",
  store: sourceSiteStore,
  queryMode: 'local',
  displayField: 'sourceSiteName',
  valueField: 'sourceSiteId',
  width:200
   });
  </code></pre>
  
  <p><img src="https://i.stack.imgur.com/AosjH.jpg" alt="enter image description here">
  Please suggest what is missing here.</p>
  
  <pre><code>var combo=Ext.create('Ext.form.ComboBox', 
              {
                  multiSelect : false,
                  id:'SelectComponentId',
                  name:'SelectComponentId',
                  allowBlank: true,
                  inputId:'SelectComponentId_input',
                  hideTrigger: false,
                  editable: false,
                  selectOnFocus: false,
                  typeAhead: false,
                  disabled: false,
                  readOnly: false,
                  width: 312,
                  store: [['-1','Select User'],['59','Yagna Tel Clear']],
                  value:'-1',
                  renderTo:'UserBO_SelectComponentId_Div',
                  triggerAction: 'all'
              });
  </code></pre>
  
  <p>in the above code If i remove the width it works fine, but take default width, but I want to assign the width.
  Please suggest what is missing here</p>