I have the following code and when i open the window the first tab show ok but the second tab dont. If i resize the window the content of tab are show how must on the window open. Any solution ???


<style type="text/css">
    .label{
        width:200px;
        height:15px;
        text-align:center;
        padding: 5px 0;
        border:1px dotted #99bbe8;
        background:#002f67;
        color: #cada39;
        cursor:default;
        margin:10px;
        margin-left:0px;
        font-family:bold 11px TheSansCorrespondence;
    }
    .telefonica a span{ 
        color: #cada39;
        font-family:bold 11px TheSansCorrespondence;
    }
</style>    

<ext:Window ID="winUsuario" runat="server" Modal="true" Show&#111;nload="false" Height="540" Width="470" Title="Usuário" Icon= "User"  BodyStyle="padding:10px;background-color:#fff;">
        <Body>
        <ext:ContainerLayout ID="ContainerLayout2" runat="server">
        <ext:Panel ID="Panel6" runat="server" Border="false">
            <Body>
            <ext:FormLayout id="FormLayout9" runat="server" LabelWidth="120">
                <ext:Anchor Horizontal="100%">
                <ext:TextField id="txtNome" runat="server" ReadOnly="false" FieldLabel="Nome" AllowBlank="false" BlankText="Campo 'Nome' obrigatório." />
                </ext:Anchor>
                <ext:Anchor Horizontal="100%">
                <ext:TextField id="txtLogin" runat="server" ReadOnly="false" FieldLabel="Login" AllowBlank="false" BlankText="Campo 'Login' obrigatório." />
                </ext:Anchor>
                <ext:Anchor Horizontal="100%">
                <ext:TextField id="txtUsuarioTelefone" runat="server" ReadOnly="false" FieldLabel="Telefone" AllowBlank="true" />
                </ext:Anchor>
                <ext:Anchor Horizontal="100%">
                <ext:TextField id="txtEMail" runat="server" ReadOnly="false" FieldLabel="E-Mail" AllowBlank="false" BlankText="Campo 'e-Mail' obrigatório." />
                </ext:Anchor>
                <ext:Anchor Horizontal="100%">
                <ext:ComboBox id="cmbGrupo" runat="server" FieldLabel="Grupo" Editable="false" TypeAhead="true" Mode="Local" ForceSelection="true" TriggerAction="All" EmptyText="Selecione o Grupo..." Select&#111;nfocus="true" AllowBlank="false">
                    <AjaxEvents>
                    <Select OnEvent ="AtualizaPermissoes" />
                    </AjaxEvents>
                </ext:ComboBox>
                </ext:Anchor>
            </ext:FormLayout>
            </Body>
        </ext:Panel>
        <ext:TabPanel ID="TabPanel2" runat="server" ActiveTabIndex="0" Plain="true" AutoHeight="true" AutoWidth="true">
        <Tabs>
            <ext:Tab ID="Tab3" runat="server" Title="Menus" AutoHeight="true" AutoWidth="true" BodyStyle="padding:10px;">
            <Body>
             <ext:TableLayout ID="TableLayout3" runat="server" Columns="2">
                <ext:Cell>
                    <ext:Label ID="Label5" runat="server" Html="<div class='label'>Menus
" />
                </ext:Cell>
                <ext:Cell>
                    <ext:Label ID="Label6" runat="server" Html="<div class='label'>Permissões
" />
                </ext:Cell>
                <ext:Cell>
                    <ext:Panel ID="Panel7" runat="server" Border="false" AutoHeight="true" AutoWidth="true">
                        <Body>
                            <ext:MultiSelect ID="lstUsuarioMenus" runat="server" DragGroup="grp1" DropGroup="grp2,grp1" Width="200" Height="200" KeepSelection&#111;nclick="WithCtrlKey" StoreID="strUsuarioMenus" DisplayField="text" ValueField="value" />
                        </Body>
                    </ext:Panel>
                </ext:Cell>
                <ext:Cell>
                    <ext:Panel ID="Panel8" runat="server" Border="false" AutoHeight="true" AutoWidth="true">
                        <Body>
                            <ext:MultiSelect ID="lstPermissoesUsuarioMenu" runat="server" DragGroup="grp2" DropGroup="grp1,grp2" Width="200" Height="200" KeepSelection&#111;nclick="WithCtrlKey" StoreID="strPermissaoUsuarioMenu" DisplayField="text" ValueField="value" />
                        </Body>
                    </ext:Panel>
                </ext:Cell>
            </ext:TableLayout>
            </body>
            </ext:Tab>
            <ext:Tab ID="Tab4" runat="server" Title="Clientes" AutoHeight="true" AutoWidth="true" BodyStyle="padding:10px;">
            <Body>
             <ext:TableLayout ID="TableLayout4" runat="server" Columns="2">
                <ext:Cell>
                    <ext:Label ID="Label7" runat="server" Html="<div class='label'>Clientes
" />
                </ext:Cell>
                <ext:Cell>
                    <ext:Label ID="Label8" runat="server" Html="<div class='label'>Permissões
" />
                </ext:Cell>
                <ext:Cell>
                    <ext:Panel ID="Panel9" runat="server" Border="false" AutoHeight="true" AutoWidth="true">
                        <Body>
                            <ext:MultiSelect ID="lstUsuarioClientes" runat="server" DragGroup="grp1" DropGroup="grp2,grp1" Width="200" Height="200" KeepSelection&#111;nclick="WithCtrlKey" StoreID="strUsuarioClientes" DisplayField="text" ValueField="value" />
                        </Body>
                    </ext:Panel>
                </ext:Cell>
                <ext:Cell>
                    <ext:Panel ID="Panel10" runat="server" Border="false" AutoHeight="true" AutoWidth="true">
                        <Body>
                            <ext:MultiSelect ID="lstPermissoesUsuarioCliente" runat="server" DragGroup="grp2" DropGroup="grp1,grp2" Width="200" Height="200" KeepSelection&#111;nclick="WithCtrlKey" StoreID="strPermissaoUsuarioCliente" DisplayField="text" ValueField="value" />
                        </Body>
                    </ext:Panel>
                </ext:Cell>
            </ext:TableLayout>
            </body>
            </ext:Tab>
        </Tabs>
        </ext:TabPanel>
        </ext:ContainerLayout>
        </Body>
        <BottomBar>
                <ext:StatusBar ID="stbUsuario" runat="server"></ext:StatusBar>            
        </BottomBar>        
        <Buttons>
            <ext:Button id="cmdUsuario" runat="server" Text="Salvar" Icon="Disk">
               <ajaxevents>
                    <Click onevent="cmdUsuario_Click">
                        <ExtraParams>
                            <ext:Parameter Name="multi6" Value="Ext.encode(#{lstPermissoesUsuarioMenu}.getValues(true))" Mode="Raw" />
                            <ext:Parameter Name="multi8" Value="Ext.encode(#{lstPermissoesUsuarioCliente}.getValues(true))" Mode="Raw" />
                        </ExtraParams>
                    </Click>
                </ajaxevents>
            </ext:Button>
         </Buttons>
       </ext:Window>