Hi,
In the following code, the dropdown control does not render in IE 7 or IE 8 compatibility mode. Removing the form decorator control causes the dropdown to render.
I'm running .NET 2.0 and RAD Controls 2009.1.527.20.
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="FormDecoratorTest.aspx.cs" Inherits="FormDecoratorTest" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Test</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<telerik:RadScriptManager ID="RSM1" runat="server" />
<telerik:RadFormDecorator ID="FD1" runat="server" DecoratedControls="None" />
<telerik:RadSplitter ID="RSB1" runat="server">
<telerik:RadPane ID="RP1" runat="server">
<asp:DropDownList ID="TestDDL" runat="server">
<asp:ListItem Text="Select One..." />
</asp:DropDownList>
</telerik:RadPane>
</telerik:RadSplitter>
</div>
</form>
</body>
</html>