Last Updated: 12 Jan 2023 08:28 by ADMIN
Release R1 2023

Using the latest 2022.3.1109.45, our web application is catching "Invalid Resource Request" exceptions when the Windows7 or Vista (maybe others too) loads the "Editor" control in "Classic" mode.    By decoding the URL, the control is having problems locating the image below

Error Message: This is an invalid webresource request.



Change the skin of the radeditor in the default.aspx to another skin such as "metro" and the problem will not happen.    It works OK at least on Black, Metro and Silk but haven't tested others, you can tell it doesn't work when the divider bars in the editor toolbar don't appear properly.

Last Updated: 21 Nov 2022 14:46 by ADMIN
In earlier versions of the editor, the css class was applied to the image tag itself, which is the correct way to do it. Otherwise the applied css class has no effect on the image.
Last Updated: 17 Nov 2022 11:55 by ADMIN

The editor does not work at all in Chrome for iOS.

You can reproduce it in this demo:




Last Updated: 05 Sep 2022 10:43 by ADMIN
Release R3 2022
Clear content;
Add a table;
Open context menu by selecting a cell in the table;
Open Cell Properties;
Open More cell Styling;
Chose Background color;
Change it and click OK
Click OK in Table Wizard.
Actual: No background color is applied. 
Last Updated: 29 Jun 2022 12:28 by ADMIN
Release R3 2022

Please follow these steps to reproduce the issue: 1. Open RadEditor Demo: 2. Choose a word that is present in the text (e.g. "Barcelona"). 3. Open "Find And Replace" dialog. 4. Click on the "Replace" tab. 5. Write "Barcelona" or any other chosen word in the "Find" field. 6. Write something in the "Replace With" field (e.g. "Replacement"). 7. Select the "Up" Direction in "Search Options". 8. Click "Replace All". Actual Result: The "The search string was not found." message is displayed and the substrings ("Barcelona") are not replaced. Expected Result: All occurrences of the substring are replaced. Note that this functionality seems to be working if the "Down" direction is chosen.

Update: I would like to add that the issue is not only with Replace All. The same bug is happening with "Replace" with both "Up" and Down" directions.

Last Updated: 29 Jun 2022 09:45 by ADMIN

The execution of the getContextMenuByTagName inside the oncontextmenu event of RadEditor hides the context menu once it is shown. This happens in Lightweight render mode only and when the UseRadContextMenu is enabled:

<telerik:RadEditor ID="RadEditor1" runat="server" ContentAreaMode="iframe" OnClientLoad="OnClientLoad">
    function OnClientLoad(editor, args) {
        editor.attachEventHandler("oncontextmenu", function (e) {
            var oSelection = editor.getSelectedElement();

            setTimeout(function () {
                var tdMenu = editor.getContextMenuByTagName("TD"); //the call of getContextMenuByTagName closes the context menu when lightweight render mode is used. You can slow down the closing with the setTimeout function or by settign UseRadContextMenu to false.

            }, 1000);


Last Updated: 24 Jun 2022 13:56 by ADMIN
Release R3 2022
Created by: Rumen
Comments: 2
Category: Editor
Type: Bug Report
"The size of the uploaded file exceeds max size allowed" is thrown even if the file is under the specified maximum upload file size.

The error is reproducible in the Default demo ->

Open the Document manager and upload some unsupported file which size does not exceed 200 kb. For example upload a small image file. You'll get the following error:

The size of the uploaded file exceeds max size allowed.
The extension of the uploaded file is not valid. Please, provide a valid file!

while only this line should be shown: The extension of the uploaded file is not valid. Please, provide a valid file!
Last Updated: 22 Jun 2022 12:34 by ADMIN
Pressing ENTER over a list item not only creates a new li, but also inserts additional <br> element.


Steps to reproduce:
1. Open in Chrome:
2. Switch to Html mode and insert the following content:
    <li>123 456

3. Switch to design mode
4. Put the cursor inside the first li (e.g. before 5) and press ENTER

Result: A <br> element is added in the beginning of the new <li> element
Last Updated: 21 Jun 2022 22:53 by ADMIN
It should rather select the last cell of the table. 
Last Updated: 21 Jun 2022 22:39 by ADMIN
1.       Visit the RadEditor demo at (I used Google Chrome.)

2.       In the HTML view, replace the entire demo text with

This <strong>strange</strong> thing

3.       In the Design view, place the cursor at the very end of the line, and press Shift+Left repeatedly.

a.       At first it will highlight the final letter correctly.

b.      Then it will UNHIGHLIGHT the final letter!

c.       Then it will begin highlight more letters again starting from the letter BEFORE the final letter.

d.      Then, after highlighting the “e” in strange, it will being UNHIGHLIGHTING starting from the righthand side of the selection!

e.      Then it will highlight left as far as the “s”.

f.        Then it will start UNHIGHLIGHTING from the right again!

g.       Then highlighting the space to the left

h.      Then UNHIGHLIGHTING the space to the left!

i.         Then highlighting to the left as far as the beginning of the line

j.        Then UNHIGHLIGHTING from the right side of the selection!

Pressing Shift+Left and Shift+Right should always modify only one end of the selection, and the other end should always remain where the selection was started. This is how Windows Notepad and virtually all other applications behave.
Last Updated: 21 Jun 2022 22:38 by ADMIN
Created by: JP
Comments: 1
Category: Editor
Type: Bug Report

Steps to reproduce the text highlighting issue:

  1. Go to
  2. Delete the content and write a single line
  3. Use the mouse to highlight a portion of text starting at the end (right side) of the text and dragging toward the beginning (left side).
  4. Stop about halfway to the beginning of the text.
  5. Now, while the text is still highlighted, press shift and left arrow to continue selecting. This will work for some time until the highlight gets near the beginning, then, the highlight will start moving from the right side.
Last Updated: 21 Jun 2022 22:34 by ADMIN
When using Table Wizard to insert a new table inside a table cell, the selected table is replaced by the one created from Table Wizard. 

Currently, the workaround is to use the plain InsertTable tool in order to nest tables. 
Last Updated: 21 Jun 2022 22:34 by ADMIN
Last Updated: 21 Jun 2022 15:13 by ADMIN
Last Updated: 21 Jun 2022 15:00 by ADMIN
FileBrowser pager slider tooltips: "Increase", "Decrease"

FileBrowser grid column resize: "Drag to resize" 
Last Updated: 21 Jun 2022 09:56 by ADMIN
Last Updated: 21 Jun 2022 09:33 by ADMIN
When creating or updating old areas, the target value always shows either Target or the lastly selected one. It does not update its state.
Last Updated: 20 Jun 2022 14:59 by ADMIN
Tracked content that is deleted should be removed directly, but newly added content should be tracked.
Won't Fix
Last Updated: 20 Jun 2022 14:43 by ADMIN
ContentEditable=true attribute is added to the body element of the Editor's content when resizing a table in RadEditor in Chrome.
Won't Fix
Last Updated: 08 Jun 2022 08:10 by ADMIN
Created by: Marin Bratanov
Comments: 1
Category: Editor
Type: Bug Report
When there is a hidden <tfoot> element in the table, the Delete Row command in the editor context menu cannot delete the last row in IE. Works with other rows and other browsers.

WORKAROUND: use visibility: collapse for the footer rows instead of dispay:none for the footer

Repro steps:
- Use the markup attached below
- right click the last row in any table
- choose Row > Delete Row 

Expected: row is always deleted

Actual: in IE you cannot delete the last row of the second table
1 2 3 4 5 6