or
Environment: Internet Explorer 11 (11.0.12) with Document Mode Edge (Default), Telerik UI for ASP.NET AJAX Library Q2 2014 version 2014.2.724
​Steps to reproduce:
1. In Visual Studio, create a new ASP.NET Web Application using the Empty template and the Web Forms as a core reference.
2. Add references to Telerik.Web.UI and Telerik.Web.UI.Skins assemblies.
3. Add the Default.aspx Web Forms item into the root of the project.
4. In Default.aspx page, add the following HTML:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication2.Default" %><br><%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"> <title></title></head><body> <form id="form1" runat="server"> <telerik:RadScriptManager ID="RadScriptManager1" runat="server"></telerik:RadScriptManager> <telerik:RadEditor ID="RadEditor1" runat="server"> <Snippets> <telerik:EditorSnippet Name="2 Column Div Layout"> <!-- Row 1 --> <div class="row"> <div class="span7"> <div class="row"> <div class="span4"> <p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus, suspendisse ac nec et.</p> </div> <div class="span3"> <p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus, suspendisse ac nec et.</p> </div> </div> </div> </div> <!-- Pad --> <div class="pad15"></div> <!-- Row 2 --> <div class="row"> <div class="span7"> <div class="row"> <div class="span4"> <p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus, suspendisse ac nec et.</p> </div> <div class="span3"> <p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus, suspendisse ac nec et.</p> </div> </div> </div> </div> </telerik:EditorSnippet> </Snippets> </telerik:RadEditor> </form></body></html>Actual Result:
<!-- Row 1 --><div class="row"><div class="span7"><div class="row"><div class="span4"><p><!-- Row 1 --><div class="row"><div class="span7"><div class="row"><div class="span4"></div></div></div></div></p><p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus, suspendisse ac nec et.</p><p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus, suspendisse ac nec et.</p><p><div class="row"><div class="span7"><div class="row"><div class="span3"></div></div></div></div><!-- Pad --><div class="pad15"> </div><!-- Row 2 --><div class="row"><div class="span7"><div class="row"><div class="span4"></div></div></div></div></p><p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus, suspendisse ac nec et. </p><p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus, suspendisse ac nec et. </p><p><div class="row"><div class="span7"><div class="row"><div class="span3"></div></div></div></div>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus, suspendisse ac nec et.</p></div><div class="span3"><p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus, suspendisse ac nec et.</p></div></div></div></div><!-- Pad --><div class="pad15"> </div><!-- Row 2 --><div class="row"><div class="span7"><div class="row"><div class="span4"><p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus, suspendisse ac nec et.</p></div><div class="span3"><p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus, suspendisse ac nec et.</p></div></div></div></div><!-- Row 1 --><div class="row"><div class="span7"><div class="row"><div class="span4"><p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus, suspendisse ac nec et.</p></div><div class="span3"><p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus, suspendisse ac nec et.</p></div></div></div></div><!-- Pad --><div class="pad15"> </div><!-- Row 2 --><div class="row"><div class="span7"><div class="row"><div class="span4"><p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus, suspendisse ac nec et. </p></div><div class="span3"><p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus, suspendisse ac nec et. </p></div></div></div></div><!-- Row 1 --><div class="row"><div class="span7"><div class="row"><div class="span4"><p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus, suspendisse ac nec et.</p></div><div class="span3"><p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus, suspendisse ac nec et.</p></div></div></div></div><!-- Pad --><div class="pad15"> </div><!-- Row 2 --><div class="row"><div class="span7"><div class="row"><div class="span4"><p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus, suspendisse ac nec et. </p></div><div class="span3"><p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus, suspendisse ac nec et. </p></div></div></div></div><!-- Row 1 --><br><div class="row"><br><div class="span7"><br><div class="row"><br><div class="span4"><br><p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus,<br>suspendisse ac nec et.</p><br></div><br><div class="span3"><br><p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus,<br>suspendisse ac nec et.</p><br></div><br></div><br></div><br></div><br><!-- Pad --><br><div class="pad15"> </div><br><!-- Row 2 --><br><div class="row"><br><div class="span7"><br><div class="row"><br><div class="span4"><br><p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus,<br>suspendisse ac nec et. </p><br></div><br><div class="span3"><br><p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus,<br>suspendisse ac nec et.<br><!-- Row 1 --><br><div class="row"><br><div class="span7"><br><div class="row"><br><div class="span4"><br></div><br></div><br></div><br></div><br></p><br><p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus,<br>suspendisse ac nec et.</p><br><p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus,<br>suspendisse ac nec et.</p><br><p><br><div class="row"><br><div class="span7"><br><div class="row"><br><div class="span3"><br></div><br></div><br></div><br></div><br><!-- Pad --><br><div class="pad15"> </div><br><!-- Row 2 --><br><div class="row"><br><div class="span7"><br><div class="row"><br><div class="span4"><br></div><br></div><br></div><br></div><br></p><br><p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus,<br>suspendisse ac nec et. </p><br><p>Enim ultrices, elementum phasellus. Mauris sed nulla sed, egestas feugiat a dictum libero, nunc sapien tri tique facilisis venenatis risus,<br>suspendisse ac nec et. </p><br></div><br></div><br></div><br></div><tlrk:RadComboBox ID="InternalComboBox" runat="server" HighlightTemplatedItems="true" > <ItemTemplate> <div onclick="StopPropagation(event)" > <asp:CheckBox ID="ComboCheckBox" runat="server" CssClass="formTextElevenPx" style="vertical-align: middle;" /> <span id="CheckBoxLabel" runat="server"><%# DataBinder.Eval(Container, "Text")%></span> </div> </ItemTemplate></tlrk:RadComboBox><script type="text/javascript"> //cancel bubbling e.cancelBubble = true; if (e.stopPropagation) { e.stopPropagation(); } } function onCheckBoxClick_<% =uniqueKey %>() { var combo = $find("<%= InternalComboBox.ClientID %>");
UpdateMessage(combo);
} function UpdateMessage(combo) { var items = combo.get_items(); var text = ""; for (var i = 1; i < items.get_count(); i++) { var item = items.getItem(i); var chk1 = $get(combo.get_id() + '_i' + i + '_ComboCheckBox'); if (chk1.checked) text+= item.get_text() + ", "; } return text.trim(); }</script>protected string uniqueKey; protected void Page_PreRender(object sender, EventArgs e) { this.uniqueKey = Guid.NewGuid().ToString("N"); foreach (RadComboBoxItem i in InternalComboBox.Items) { CheckBox cbx = i.FindControl("ComboCheckBox") as CheckBox; if (cbx != null) { cbx.Attributes["onclick"] = "return onCheckBoxClick_" + uniqueKey + "()"; } }