Hello!
I have a strange problem, but do not find anything similar on the web!
I made a simple aspx as below
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication1.WebForm1" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:CheckBox ID="CheckBox1" runat="server" Text="teste" />
<br />
<br />
<asp:CheckBoxList ID="CheckBoxList1" runat="server">
<asp:ListItem>aaaaaaaaa</asp:ListItem>
<asp:ListItem>bbbbbbbbbb</asp:ListItem>
</asp:CheckBoxList>
...
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