Won't Fix
Last Updated: 14 Sep 2016 12:33 by ADMIN
The manually set height of RadWindow is not persisted after PostBack if the control's ShowContentDuringLoad property is set to False. The issue is reproducible in IE9.

Video: http://screencast.com/t/ChvvBVzst

Workaround: Set ShowContentDuringLoad="true" when the current browser is IE:
    <button onclick="OpenRadWindow();return false;" class="Button" style="width: 190px"> Show popup window</button>
    <script type="text/javascript">
        function OpenRadWindow() {
            var oManager = GetRadWindowManager();
            oWind = oManager.getWindowByName("RadWindow1");
            if ($telerik.isIE)

        function pageLoaded(oWind) {
Won't Fix
Last Updated: 07 Jan 2016 14:07 by ADMIN
Created by: Danail Vasilev
Comments: 0
Category: Window
Type: Bug Report
As a workaround you can manually display the loading panel as per this KB - http://www.telerik.com/support/kb/aspnet-ajax/window/details/custom-loading-sign-for-radwindow
Won't Fix
Last Updated: 07 Dec 2015 12:55 by ADMIN
When the Lightweight render mode is enabled and you set large text in any of the dialogs of RadWindow, part of the text appears outside of the window.

You can workaround this issue by overriding the styles of the dialogs. Below you can check a possible approach for RadAlert:
    <style type="text/css">
        div.RadWindow {
            overflow: auto;
            height: auto !important;

        .rwDialogMessage {
            padding-bottom: 30px;
Won't Fix
Last Updated: 18 Oct 2016 11:25 by ADMIN
The ContentTemplate is designed as a container for server controls, so you would need to declare and use a RadWindow with a ContenTemplate (even blank) for this to work as expected. The ContentTemplate element is not created upon client-side setting at this point, so having a content that is not where it is supposed to be may break the control afterwards (e.g., if autosizing is used).

A workaround is to create a dummy content template that can alleviate most issues:
var wnd = radopen(null, wndName);

//create an imitation of the ContentTemplate
if (!wnd.___customContentElemCreated) {
$telerik.$("iframe", wnd.get_popupElement()).remove();

var cElem = document.createElement("div");
cElem.setAttribute("id", wnd.get_id() + "_C");
cElem.style.display = "";
cElem.style.overflow = "auto";
cElem.style.border = "0px";

wnd.___customContentElemCreated = true;

Won't Fix
Last Updated: 19 Jan 2017 09:40 by ADMIN
The IE iframe module crashes, most likely because of the fact that events do not bubble to iframes.