When a table is created through the table wizard and a background image is set to one of the cells, saving and closing the Editor in SP2010 causes the background image to be stripped.

When the VisibleControls property of FileExplorer is set to "Grid" and the InitialPath value is pointing to a specific file, the file is not selected on page load.

The following code snippet can be used to prevent this behavior:

<telerik:RadEditor ID="RadEditor1" runat="server">
</telerik:RadEditor>
 
<script type="text/javascript">
    (function (Editor) {
        var setCursor = Editor.Selection.prototype._setCursor;
        if (setCursor) {
            Editor.Selection.prototype._setCursor = function (node, range) {
                return Editor.Utils.isTag(node, "img") ?
                    this._setCursorAfterNode(node, range) : setCursor.call(this, node, range);
            };
        }
    })(Telerik.Web.UI.Editor);
</script>

Markup to reproduce the issue:

<telerik:RadEditor ID="RadEditor1" runat="server" EditModes="Design" RenderMode="Lightweight">
<Tools>
<telerik:EditorToolGroup>
<telerik:EditorTool Name="Bold" />
<telerik:EditorTool Name="Italic" />
<telerik:EditorTool Name="Underline" />
</telerik:EditorToolGroup>
</Tools>
<Content>
<p>test</p>
<p>test</p>
</Content>
</telerik:RadEditor>

Resolution:

<script type="text/javascript">
	(function ($UI) {
		$UI.SizerLightweight.prototype._calcUiHeight = function () {
			var that = this,
				view = that._view,
				editor = that.editor,
				calculator = new $UI.DimensionsCalculator(editor),
				toolBarContainer = view.toolBarContainer(),
				toolBarHeight = that._getComponentHeight(toolBarContainer),
				paddings = calculator.getComputedSizes(editor.get_element(), ["padding-top", "padding-bottom"]),
				margins = calculator.getComputedSizes(toolBarContainer, ["margin-bottom"]),
				borders = calculator.getComputedSizes(view.contentAreaContainer(), ["border-top-width", "border-bottom-width"]),
				modesHeight = that._getComponentHeight(view.modesRowContainer()),
				modulesHeight = that._getComponentHeight(view.modulesContainer());

			return toolBarHeight + modesHeight + modulesHeight + margins + borders + paddings;
		}
	})(Telerik.Web.UI.Editor.UI);
</script>

Steps to reproduce:

Use the following markup and click set html button:

<telerik:RadEditor ID="RadEditor1" runat="server" NewLineMode="Div">
<Content>
<div><span style="font-family: 'Courier New';">test</span></div>
<div><span style="font-family: 'Courier New';">&nbsp;</span></div>
<div><span style="font-family: 'Courier New';">test</span></div>
</Content>
</telerik:RadEditor>

<button type="button" onclick="getSetHtml();return false;">set html</button>

<script>
function getSetHtml() {
var editor = $find("RadEditor1");
var html = editor.get_html(true);
editor.set_html(html);
}
</script>

Actual: The white space character in the empty line is removed and the empty line is not rendered

Expected: The space is not removed and the new line is rendered

Workaround:

<script>
	(function ($E) {
		var utils = $E.Utils;
		Telerik.Web.UI.Editor.TrackerBase.prototype.removeZeroWidthNodes = 
			function () {
				var that = this,
					nodes = that.nodes,
					reZeroWidthChar = new RegExp("^[" + that._zeroWidthCharacter + "]+$");

				var nodeValuePairs = that.nodeValuePairs = [];
				for (var i = 0; i < nodes.length; i++) {
					var node = nodes[i];
					if (utils.isTextNode(node) && !that._isNodeRemoved(node)) {
						var nodeValue = node.nodeValue;
						if (reZeroWidthChar.test(nodeValue)) {
							nodeValuePairs.push({ node: node, value: node.nodeValue });
							var parentBlockElement = utils.getBlockParent(node);
							var isInEmptyBlockElement = parentBlockElement && utils.isNodeEmptyRecursive(parentBlockElement);
							node.nodeValue = isInEmptyBlockElement ? "\u00A0" : "";
						}
						else {
							that.removeFirstZeroWidthChar(node);
						}
					}
				}
			}
	})(Telerik.Web.UI.Editor);
</script>

This causes also to cancel submit and produce an incorrect behavior.

You can use RadButton as a toggle button with type Checkbox as alternative solution:

<telerik:RadButton runat="server" ButtonType="ToggleButton" ToggleType="CheckBox" RenderMode="Lightweight" AutoPostBack="false"></telerik:RadButton>

RadToolTipManager cannot find custom embedded skin, when a custom skin DLL is created with the Skins assembly builder (http://skinsassemblybuilder.telerik.com/).

Steps to reproduce:
1. Create a custom skin and wownload ZIP from Visual Style Builder (http://skinsassemblybuilder.telerik.com/)
2. Upload ZIP to Skins Assembly builder (http://skinsassemblybuilder.telerik.com/)
3. Create new project with Telerik template, turn off all options (like additional skins).
4. Add downloaded DLL as project reference.
5. Add to web.config:  <add key="Telerik.Skin" value="My_Skin" />
        <add key="Telerik.EnableEmbeddedSkins" value="true" />
        <add key="Telerik.EnableEmbeddedBaseStylesheet" value="true" />
        <add key="Telerik.Web.SkinsAssembly" value="My_Skin"/>
6. In Default.aspx, add
      <telerik:RadToolTipManager runat="server"></telerik:RadToolTipManager>

Result: an Internal Server Error is thrown:
Telerik.Web.UI.RadToolTipManager with ID='ctl03' was unable to find an embedded skin with the name 'My_Skin'. Please, make sure that the skin name is spelled correctly and that you have added a reference to the Telerik.Web.UI.Skins.dll assembly in your project. If you want to use a custom skin, set EnableEmbeddedSkins=false.