RadScheduler Server-side PDF Export does not support Lightweight render mode, as specified in the respective help article:
http://docs.telerik.com/devtools/aspnet-ajax/controls/scheduler/export/pdf/overview.html

an email text control.
a control like a text box but that filters out the invalid characters that cannot be used in an email address. This control could be separated in 3 parts:

part1@part2.part3

When the user hits the dot "." just before part3, a autocomplete feature can make it easier (faster) to select a frequently used prefex (like .com, .net, .org, etc...). This feature can be customized by the developer. The developer can turn it on or off. He can also make an own autocomplete list and eventually restrict to a list of suffixes.
Also when you want the user to type in an email address with a fix part 2 and part 3, the developer could customize it like this (e.g. when you want the user to enter only email addresses of @gmail.com, the developer can do this by design.

The three parts in the email address are required in order to have a valid email address.

As an extra feature the control can have a "IsValid()"-method that can be used by the developer to quickly check whether the email address is valid.

Server-side as well as client-side API make sense....

Please could you make a RadToggleSwitch for ASP.NET AJAX? (Similar to the WinForms control)

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.

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>

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>

Based on customer feedback: fully collapsed groups in the ribbon bar have a smaller height, which leads to a broken layout, when only part of the ribbon groups are fully collapsed.

Based on customer feedback: We just observed the problem that the width where the ribbon completely collapses does not match the width where the ribbon stops being completely collapsed.

Based on customer feedback, we should implement styles in the ribbon, say a class name, that when applied will truncate the titles of ribbon groups.

Though by specification a group title should be short, that's not always possible. Having those styles will allow customers to have the groups being sized according to their content and not the greater of maximum of the content or group title 

This feature will allow users to set long footer's text and it will be displayed on a single line.


<ExportSettings><Pdf><PageFooter><<MiddleCell Text="This is a very long footer that gets split to two lines" /></PageFooter></Pdf></ExportSettings>