我使用个列布局，每个field对象设置了anchor:'100%'为了实现当父容器大小发生变化时，
field的宽度跟着变化，但是当界面比较拥挤的时候就会出现下图的情况，当出现这种情况后把边框稍微拖动一下，界面就立刻正常了。
有人遇到过同样的问题吗？
[code]
{
             xtype:'fieldset',
             title:'配置信息',
             layout:'column',
             defaults: {
                 border: false,
                 bodyStyle: 'background-color: #DFE8F6;'
             },
             items:[{
                 columnWidth:.33,
                 layout:'form',
                 defaults: {
                     anchor:'100%'
                 },
                 items:[
                 vendor,
                 {
                     xtype:'numberfield',
                     fieldLabel:'宽度(m)',
                     readOnly:true,
                     name:'dimWidth'
                 }]
             },{
                 columnWidth:.33,
                 layout:'form',
                 defaults: {


                     anchor:'100%'
                 },
                 items:[
                 equipmentTemplateId,
                 {
                     xtype:'numberfield',
                     fieldLabel:'深度(m)',
                     readOnly:true,
                     name:'dimLength'
                 }]
             },{
                 columnWidth:.33,
                 layout:'form',
                 defaults: {
                     anchor:'100%'
                 },
                 items:[{
                     xtype:'numberfield',
                     fieldLabel:'高度(m)',
                     readOnly:true,
                     name:'dimHeight'
                 },sidedcategory]
             }]
         }
[/code]