When there are words highlighted as wrong and triggering the Finish Spellchecking without correcting any words, subsequent editing of words inside the sentence causes random cursor replacement. 

Workaround:

<telerik:RadEditor ID="RadEditor1" runat="server" OnClientLoad="OnClientLoad">
    <Content>Whether you need a mere Textbox with Google-like spellchecker, or a Word-like content authoring environment, the result is the same: clean <strong>XHTML</strong></Content>
</telerik:RadEditor>

<script>
    function OnClientLoad(sender, args) {
        sender.add_spellCheckLoaded(spellCheckLoaded)
    }

    function spellCheckLoaded(sender) {
        var editor = sender;
        var spell = editor.get_ajaxSpellCheck();

        spell.add_spellCheckEnd(function (sender, args) {
            editor.set_html(editor.get_html(true));
        });
    }
</script>

The click event of the button is not prevented and the native anchor behavior occurs. This causes the page to scroll to the top and a # to appear in the URL. 

You can use the following code snippet to prevent the native click behavior of the anchor element and workaround the issue:

<telerik:RadEditor runat="server" ID="RE1" ToolbarMode="Floating" OnClientLoad="OnClientLoad"></telerik:RadEditor>

<script>
    function OnClientLoad(sender, args) {
        $telerik.$(".RadEditor a[title='Toggle Floating Toolbar']").attr("href", "javascript:void(0);")
    }
</script>

When link is given to any image or text, Unlink command should get enabled. But it gets enabled for text only while remains disabled for images.
http://screencast.com/t/xHgru58pzKL

The issue has been reproducible since 2015 Q1 release

Another post appears as "Provide ability to paste/insert images from clipboard/local drive directly into RadEditor" and talks about similar but to date a facility does not exis as I envisage.

When I work with for example a web mail facility like Yahoo Mail I am using an editor like RadEditor to create my email. When I say I want to attach a file this editor assumes that the file will come from my local drive (rather than a Yahoo server). This is what I would like to see as an option for Radeditor image handling - something like a button that says "upload". Clicking on it takes you to a dialogue to simply upload from local into the document. I appreciate that uploading from local can be done with existing Radeditor Image manager but this also offers access to server space that in the case of e.g. web mail is irrelevant and confusing.

In an ideal world I would also like the uploaded document to be automatically associated with the document (email) that it has been loaded into although that can of course be handled manually.

When link is given to image or text, Unlink command should get enabled. But it gets enabled for text only while remains disabled for images. 

To get a better understanding, please refer to the following video:
http://screencast.com/t/xHgru58pzKL

ContentEditable=true attribute is added to the body element of the Editor's content when resizing a table in RadEditor in Chrome.

http://screencast.com/t/0s3QlydHv

Hi,
There is a bug with the "Play" parameter while I insert a SWF movie.
If I uncheck this parameter, the movie still play in Chrome/Mozilla.
This bug is  from this parameter that isn't added in the Embed tag although it is in the object tag.

Example :
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="150" height="150">
<param name="Movie" value="/aspnet-ajax/Editor/images/UserDir/Marketing/Reporting_banner.swf">
<param name="play" value="false">
<param name="quality" value="high">
<param name="wmode" value="transparent">
<param name="loop" value="false">
<param name="menu" value="false"><embed src="/aspnet-ajax/Editor/images/UserDir/Marketing/Reporting_banner.swf" width="150" height="150" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" quality="high" wmode="transparent" loop="false" menu="false"></object>

Thanks a lot
Chris.

This will enable developers to easily change this property without customizing the FileBrowser dialog.

Currently, by using ExternalDialogsPath property, developers can extend the built-in dialogs by adding the user controls in a local folder. It would be a nice-to-have feature, if these user controls can be also located in a virtual folder.

The error causes the editor's content area not to render. 

The following script can be used as a temporary workaround:

<telerik:RadEditor runat="server" ID="RadEdior1" OnClientSelectionChange="OnClientSelectionChange">
</telerik:RadEditor>

<script type="text/javascript">
    function OnClientSelectionChange(editor, args) {
        if (!editor.getSelectedElement()) {
            editor.focusFirstText();
        }
    }
</script>

Steps to reproduce:
Run this in IE7 or another IE in IE7 mode:
<telerik:RadEditor ID="RadEditor1" runat="server" EditModes="Preview"></telerik:RadEditor>

Workaround:
<telerik:RadEditor ID="RadEditor1" runat="server" EditModes="Preview"></telerik:RadEditor>

<script type="text/javascript">
	(function ($T) {
		if ($telerik.isIE7) {
			var prototype = $T.Editor.UI.SizerLegacyIE.prototype;
			var setContentElementHeight = prototype.setContentElementHeight;
			$T.Editor.UI.SizerLegacyIE.prototype.setContentElementHeight = function () {
				setContentElementHeight.call(this);
				var editor = this.editor;
				if (editor.get_mode() != $T.EditModes.Html) {
					var iframeParent = this.getIframe().parentNode;
					if (Math.abs(iframeParent.offsetHeight - editor.get_element().offsetHeight) < 5) {
						iframeParent.style.height = "";
					}
				}
			}
		}
	})(Telerik.Web.UI);
</script>

When user has changed image properties via Image Properties dialog, changes are getting cleared when area is being added via Image Map Editor. 

Trying to operate with images in RadEditor under IE11 leads to unresponsiveness. For example, using the paragraph style, selecting an image and switching to HTML and Design mode, etc.

You can workaround that by forcing the compatibility mode of the IE to IE8:

<meta http-equiv="X-UA-Compatible" content="IE=8" />

When there is a need to open dialogs in browser's window instead of RadWindow, the UseClassicDialogs property is being used. With the release of Q2 2015 the functionality stopped working and throws JS error when a dialog is opened. 

To workaround this behavior you can apply the JS patch as shown below:  

    <telerik:RadEditor runat="server" ID="RadEditor1"></telerik:RadEditor>
    
    <script type="text/javascript">
        Telerik.Web.UI.RadDialogOpener.prototype._applyParameters = function (dialogName, container) {
            //If no parameters provided, return
            var parameters = this._getDialogParameters(dialogName);
            if (!parameters) return;
    
            var parametersUrlPart = "&dp=" + encodeURIComponent(parameters);
            var baseUrl = this._getBaseDialogUrl(dialogName);
            var totalUrlLength = baseUrl.length + parametersUrlPart.length;
    
            var parametersPassedFromClient = this._dialogParametersProviderTypeName == "";
            var parametersPassedThroughUrl = parametersPassedFromClient && totalUrlLength <= this.get_dialogUrlLengthLimit();
    
            if (parametersPassedThroughUrl) {
                //NEW: If the dialog features the same URL, do not reload it
                var curUrl = container.get_navigateUrl();
                var url = baseUrl + parametersUrlPart;
    
                if (curUrl != url) {
                    if (this.get_useClassicDialogs() || container.isCreated()) {
                        container.setUrl(url);
                    }
                    else {
                        container.set_navigateUrl(url);
                    }
                }
                else //Reinitialize
                {
                    var contentFrame = container.get_contentFrame();
                    if (contentFrame && contentFrame.contentWindow && contentFrame.contentWindow.$find) {
                        //TODO: Probably implement a global function initializeDialog that will be called automatically - easy for custom dialogs
                        var initDialog = contentFrame.contentWindow.initDialog;
                        if (initDialog) {
                            contentFrame.contentWindow.setTimeout(function () { initDialog(); }, 1);
                        }
                    }
                }
            }
            else {
                container.setUrl(baseUrl);
                container.DialogParameters = parameters;
            }
        };
    
    </script>

It will be possible to use Lightweight render mode with AccessibleRadEditor.

Instructions:
In IE11 when we select an image and change from Design to HTML mode or try to apply any paragraph style to it, the browser gets unresponsive. 

To get a better understanding, please refer to the following videos:
http://screencast.com/t/xufHlK0bew
http://screencast.com/t/YcVcqygVY7GE

Demo page: http://demos.telerik.com/aspnet-ajax/editor/examples/overview/defaultcs.aspx?skin=Default

Such a scenario is reproducible when RadEditor is used in Template container and the control is AJAX-enabled. For example, in an EditTemplate or InsertTemplate. 

To workaround this bug, you need to assure that the base CSS resource is loaded before RadEditor. To do so, add manually the resource in the head element of the page:

<head runat="server">
    <title></title>
    <telerik:RadCodeBlock ID="RadCodeBlock1" runat="server">
        <link href='<%= Page.ClientScript.GetWebResourceUrl(typeof(RadEditor), "Telerik.Web.UI.Skins.EditorLite.css") %>'
            rel="stylesheet" type="text/css" />
    </telerik:RadCodeBlock>
</head>

There are some cases where Find and Replace produces unexpected content when Track Changes is enabled. For example:

    1. add some tracked content;
    2. modify the content;
    3. use Find and Replace to replace words in the tracked content.

The output is that words are removed, but the replacements never appear.