Completed
Last Updated: 22 Apr 2026 10:05 by ADMIN
Release 2026 Q2
Simple reproducible is attached to illustrate the problem.

A workaround may be replacing RadButtons that invokes such postbacks with regular buttons and using a form decorator

Alternatively, you can simply disable the handler URL encryption

You can also put the following in the global.asax file to prevent the version from rendering on the page markup
        protected void Application_BeginRequest(object sender, EventArgs e)
        {
			System.Web.HttpContext.Current.Items["_!TelerikVersionStampRendered"] = true;
        }
or you can add the same line in a global Page_Load handler (e.g., in a base page class or in the master page your project uses)
Completed
Last Updated: 11 Feb 2019 10:08 by ADMIN
ADMIN
Created by: Rumen
Comments: 3
Category: UI for ASP.NET AJAX
Type: Bug Report
0
I'm using couple of Rad Editor controls in my webpart and using ToolProviderID for performance optimization.
I'm initializing one rad editor toolbar from server side and using the same toolbar to provide other rad editors with their toolbar, Bascially I'm using ToolProviderID attribute to initialize other RadEditors, after doing this the Comments and Track Changes feature stop working although their options are selected in the toolbar.


<telerik:RadEditor RenderMode="Lightweight" runat="server" ID="RadEditor1" EnableTrackChanges="true" EnableComments="true">
    <TrackChangesSettings Author="AuthorName" CanAcceptTrackChanges="true" UserCssId="reU0" />
    <Tools>
        <telerik:EditorToolGroup>
            <telerik:EditorTool Name="AcceptTrackChange" />
            <telerik:EditorTool Name="RejectTrackChange" />
            <telerik:EditorTool Name="AcceptAllTrackChanges" />
            <telerik:EditorTool Name="RejectAllTrackChanges" />
            <telerik:EditorTool Name="EnableTrackChangesOverride" />
        </telerik:EditorToolGroup>
    </Tools>
</telerik:RadEditor>
<telerik:RadEditor ID="RadEditor2" runat="server" ToolProviderID="RadEditor1" EnableTrackChanges="true" EnableComments="true"></telerik:RadEditor>
<telerik:RadEditor ID="RadEditor3" runat="server" ToolProviderID="RadEditor1" EnableTrackChanges="true" EnableComments="true"></telerik:RadEditor>
Completed
Last Updated: 06 Jan 2020 17:04 by ADMIN
Created by: Srini
Comments: 2
Category: UI for ASP.NET AJAX
Type: Feature Request
0

Request to addorder tracker component similar to the attached screen shot.

 

Srini

Completed
Last Updated: 20 Dec 2018 14:19 by ADMIN
Created by: Vinson
Comments: 1
Category: UI for ASP.NET AJAX
Type: Bug Report
0
When I try to replace a white space in RadEditor, it is able to replace the words at the first line. The second one and onwards are not able to replace.

Step:

1. Open 'Find And Replace' dialog.

2. Go to 'Replace' tab.

3. Enter a white space for 'Find' text box.

4. Enter any character or word for 'Replace With' text box.

5. Hit on 'Replace All' button.

Reproducible in content which contains table elements and in the live demo: https://demos.telerik.com/aspnet-ajax/editor/examples/overview/defaultcs.aspx
Completed
Last Updated: 20 Mar 2019 15:28 by ADMIN
Created by: MailUp Dev
Comments: 5
Category: UI for ASP.NET AJAX
Type: Bug Report
0
Using Firefox 64.0,  selecting an image doesn't appear the resizing handles which are located on each corner of the object
Completed
Last Updated: 04 Jun 2026 12:28 by ADMIN
Release 2026 Q2 SP1

When attempting to view the page in design view, here's what it looks like:

 

Here is the markup:

    <telerik:RadPanelBar ID="RadPanelBar1" runat="server">
        <Items>
            <telerik:RadPanelItem runat="server" Expanded="True" PreventCollapse="true">
                <HeaderTemplate>
                    <div ID="content-header">
                        Auditing Report | GPO Changes For User
                    </div>
                </HeaderTemplate>
                <ContentTemplate>
                    <div ID="content-body">
                        <telerik:ReportViewer ID="ReportViewer1" runat="server" ReportBookID="" Width="100%" Height="12in">
                        </telerik:ReportViewer>
                    </div>
                </ContentTemplate>
            </telerik:RadPanelItem>
        </Items>
    </telerik:RadPanelBar>

Completed
Last Updated: 27 Feb 2019 08:52 by Marin Bratanov
Completed
Last Updated: 10 Apr 2019 15:41 by ADMIN

This can be reproduced with the following sample:

<telerik:RadWindow runat="server" ID="RadWindowWithEditor" Height="1000px" OnClientShow="fixEditor"
 
    OpenerElementID="Button5">
    <ContentTemplate>
        <telerik:RadEditor RenderMode="Lightweight" runat="server" ID="RadEditor1" Width="700px" Height="700px">
            <Content>
Lorem ipsum dolor sit amet
            </Content>
        </telerik:RadEditor>
    </ContentTemplate>
</telerik:RadWindow>
<asp:Button ID="Button5" Text="open the RadWindow" runat="server" />
<script type="text/javascript">
    function fixEditor() {
        setTimeout(function () {
            $find("<%=RadEditor1.ClientID %>").onParentNodeChanged();
        }, 100);
    }
</script>

 

Completed
Last Updated: 10 Apr 2019 15:28 by ADMIN
Bug introduced in build 2019.1.115+ causes 3 extra <p>&nbsp;</p> when user presses Enter key in FireFox.  Happens when Editor is in a Wizard with more than one step.  Bug does not occur in builds prior to 2019.1.115.

Try this to reproduce:

 <telerik:RadWizard runat="server" ID="rwMain" BorderStyle="Solid" BorderColor="LightGray" BorderWidth="1px" RenderMode="Lightweight" DisplayNavigationButtons="True">
        <WizardSteps>
            <telerik:RadWizardStep ID="RadWizardStep2" Title="Content Template" StepType="Step">
                <h1>hello!</h1>
            </telerik:RadWizardStep>
            <telerik:RadWizardStep ID="RadWizardStep3" Title="Content Editor" StepType="Step">
                <telerik:RadEditor ID="ContentEditor" runat="server" RenderMode="Lightweight"></telerik:RadEditor>
            </telerik:RadWizardStep>
        </WizardSteps>
    </telerik:RadWizard>
Completed
Last Updated: 27 Mar 2019 21:46 by ADMIN
After the alert was confirmed, a Post Back is expected which does not happen due to a JavaScript exception: Cannot read property 'toString' of null
Completed
Last Updated: 02 Apr 2019 14:15 by ADMIN
Created by: Scott
Comments: 1
Category: UI for ASP.NET AJAX
Type: Feature Request
0

Hi,

 

Trying to use a web testing tool (Selenium) and using xpath is not always working.  I was wondering if it would be possible to always add an ID property to controls, especially in drop downs etc. so that it can clicked properly.

Completed
Last Updated: 10 Apr 2019 15:26 by ADMIN
When the ribbon bar is set to RibbonBarFloating, RibbonBarPageTop or RibbonBarShowOnFocus the menus cut off so you can't access menu items that would be displayed below bounds of the ribbon bar.

You can see this happening at:

https://demos.telerik.com/aspnet-ajax/controls/examples/integration/ribbonbarandeditor/defaultcs.aspx?product=editor

I have also supplied a snip of the issue.
Completed
Last Updated: 09 Apr 2019 13:40 by ADMIN
Created by: Anne
Comments: 1
Category: UI for ASP.NET AJAX
Type: Bug Report
0
Declined
Last Updated: 06 Aug 2019 09:09 by ADMIN
Created by: Donald Norris
Comments: 2
Category: UI for ASP.NET AJAX
Type: Feature Request
0

A function that will return a thumbnail of the requested size and the page of a multipage pdf document.

 

Don

Completed
Last Updated: 14 Aug 2019 12:34 by ADMIN
Created by: Chris Dalessandri
Comments: 3
Category: UI for ASP.NET AJAX
Type: Bug Report
0

Reproduction steps:

Go to the Telerik demo at https://demos.telerik.com/aspnet-ajax/textbox/overview/defaultcs.aspx
In the Comment box, type "one two".  Do not let the textbox lose focus.
Highlight "two" and start to drag it to move it before "one". The other text ("one") will disappear, and is gone forever, as far as I can tell.

It can be also reproduced with this configuration:

<telerik:RadTextBox RenderMode="Lightweight" runat="server" ID="RadTextBox3" Width="200px" EmptyMessage="Enter comment" TextMode="MultiLine" Height="100px" Resize="None"></telerik:RadTextBox>

Completed
Last Updated: 29 Jul 2019 07:48 by ADMIN

We are evaluating whether to use Telerik to redesign a legacy web app written using an old version of Telerik.

After downloading Trial version on fresh install of windows, I can't add ajax control to form. `I am using visual studio 2019, this is the first version of Telerik installed on this computer.  I just get the "Error Creating Control RadScriptManager1. They do show up in the toolbox so this surprises me.

Very latest version.

7/28/2019

Could it be a license issue?

Unplanned
Last Updated: 02 Jan 2020 16:33 by ADMIN

Hi, I have trouble with RadScriptManager. I would like combine scripts on page to only one file. But when I enabled it, my site threw javascript error on loading.
Please help me fix it, it would also be better if you can help me understand what happened.

First image is what I set up for RadScriptManager

Secondary image is the error.



I have no idea what's Telerik.Web.UI.Point, I haven't used it anywhere.

Please help me get this error out & fix it.
Thank you.

Declined
Last Updated: 11 Jun 2021 11:59 by ADMIN
Created by: Nitin
Comments: 1
Category: UI for ASP.NET AJAX
Type: Feature Request
0

Ref. attached Image its show horizontal scrolling round with red color.

In business application more number of groups and menu item at that time horizontal scrolling very usefull as shown in the attached image

Declined
Last Updated: 02 Jan 2020 16:32 by ADMIN

We suspect a bug of Telerik controls:

 

Bug of Telerik: PageView.set_contentUrl(MyUrl) method - call MyUrl twice if RadTabStrip and RadMultiPage is inside RadAjaxPanel control. Firefox only.

Code: http://bit.ly/2NVbm8Z

It enter here two times: http://bit.ly/2NZ0cQH

 

If try it in chrome - request goes only one time.

If remove RadAjaxPanel - also request goes only one time.

 

Is it bug of your Controls?