Native browser behavior is vendor specific and the above issue cannot be replicated with the latest version. Default browser in latest Android versions is Chrome and we recommend using it instead of the older native browser

Certain controls just add bloat to a page.  Like the RadListView is a GREAT control to use inplace of the asp Repeater, but I find I often don't use it (or limit it's use) because it brings down 99.9% useless client scripts.  Most of the time, especially in Sitefinity its a server-side render-only control.  Just used to show data...we don't need ANY client manipulation.

When the control is modal it should create a second iframe behind the modal background like it creates one behind the popup itself. This will allow the modal background to stay above heavy-weight objects in IE as well.

When a RadEditor or SPRadEditor in a custom WebPart for SharePoint 2013 is placed in an UpdatePanel or RadAjaxPanel it is not ajaxified and loses its content after a post back.

The sprite images for the RadButton are moved from the "Button" folder to the "Common" folder of the skins, but the Visual Style Builder searches the images in the Button folder.

The workaround is to extract the archive generated by the Visual Style Builder, move the sprites from the Common folder to the Button folder, archive the files again and import them in the Visual Style Builder. This allows you to edit them in the tool and after that you can download the skin and move the sprites back to the Common folder.

An ArgumentOutOfRange exception is thrown when using a horizontal barchart with AutoLayout = true.

[ArgumentOutOfRangeException: Length cannot be less than zero.
Parameter name: length]
   System.String.InternalSubStringWithChecks(Int32 startIndex, Int32 length, Boolean fAlwaysCopy) +10695301
   System.String.Substring(Int32 startIndex, Int32 length) +10
   Telerik.Charting.TextBlock.get_VisibleText() +194

In SharePoint 2010 if a site is created with UI version 3 (The MOSS interface) and RadEditor is set as a feature for rich text fields from the site settings. When a page is edited and an additional Content Editor Webpart is added, after editing its content, the RadEditor's content is lost.