RadComboBox renders differently in RadWindow

[Nathan]

I have a radwindow that controls an aspx page.

<telerik:RadWindow ID="wndDownloadAccounts" runat="server" Title="Download Accounts" Skin="Web20" Width="500px" Height="270px"
    ReloadOnShow="true" ShowContentDuringLoad="false" Behaviors="Close" VisibleStatusbar="false" DestroyOnClose="false" NavigateUrl="~/Views/Accounts/DownloadAccountsWindow.aspx" />

The contents of DownloadAccountsWindow.aspx are as follows:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="DownloadAccountsWindow.aspx.cs" Inherits="Foo.FooBar.Views.Accounts.DownloadAccountsWindow" MasterPageFile="~/Resources/MasterPages/Bare.Master" %>
<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>

<asp:Content ContentPlaceHolderID="CP1" runat="server">

    <script type="text/javascript">

        function InitAccountsData() {
            var data = getRadWindowParent().GetAllAccountsData();
            $get('<%= allAccountsData.ClientID %>').value = data;
        }

        function OnTypeChanged(sender, args) {
            // <%-- This is vestigial code. --%>
            var selected = sender.get_selectedItem().get_text();
        }

    </script>

    <asp:HiddenField ID="allAccountsData" runat="server" />

    <div style="padding: 10px;">

        <table cellpadding="5">
            <tr>
                <td>Download Type</td>
                <td>
                    <telerik:RadComboBox ID="cmbDownloadType" Width="200px" runat="server" Skin="Vista" OnClientSelectedIndexChanged="OnTypeChanged" OnClientLoad="OnTypeChanged" >
                        <Items>
                            <telerik:RadComboBoxItem Text="Morningstar Office" Value="Morningstar" />
                            <telerik:RadComboBoxItem Text="Morningstar Principia" Value="Principia" />
                            <telerik:RadComboBoxItem Text="Morningstar Principia CAMS" Value="CAMS" />
                            <telerik:RadComboBoxItem Text="Orion" Value="Orion" />
                            <telerik:RadComboBoxItem Text="EbixCRM SmartOffice" Value="SmartOffice" />
                        </Items>
                    </telerik:RadComboBox>
                </td>
            </tr>
            <tr>
                <td>As-Of Date</td>
                <td>
                    <telerik:RadDatePicker ID="dateAsOf" runat="server" Skin="Vista" />
                </td>
            </tr>
        </table>
        <br />
        <center>
            <asp:Button ID="btnDownload" runat="server" Text="Download" Width="100px" OnClick="btnDownload_Click" />

            <input type="button" value="Close" style="width:100px;" onclick="getRadWindow().close()" />
        </center>

    </div>

    <script>

        InitAccountsData();

    </script>

</asp:Content>

When I navigate directly to the aspx, I get the following result:
Direct Link

When I load up the aspx in the radwindow I get the following:
In radwindow

Any item that is selected is not shown in the radcombobox when I load this aspx in a radwindow.

Is there a known issue with Radwindows and radcomboboxes?

[Nencho]

Hello Nathan,

Let me suggest you try setting the RadComboBox ZIndex to a value higher than 3000.
Please find more details about absolute positioning with Z-Index at this help article.

All the best,
Nencho
the Telerik team