Fixed Issues: 

• #11331: A menu button will have a changed label when selected instead of using the aria-pressed attribute.
• #11177: Widget drag handler improvements:
  • #11176: Fixed: Initial position is not updated when the widget data object is empty.
  • #11001: Fixed: Multiple synchronous layout recalculations are caused by initial drag handler positioning causing performance issues.
  • #11161: Fixed: Drag handler is not repositioned in various situations.
  • #11281: Fixed: Drag handler and mask are duplicated after widget reinitialization.
• #11207: [Firefox] Fixed: Misplaced Enhanced Image resizer in the inline editor.
• #11102: CKEDITOR.template improvements:
  • #11102: Added newline character support.
  • #11216: Added "\'" substring support.
• #11121: [Firefox] Fixed: High Contrast mode is enabled when the editor is loaded in a hidden iframe.
• #11350: The default value of config.contentsCss is affected by CKEDITOR.getUrl.
• #11097: Improved the Autogrow plugin performance when dealing with very big tables.
• #11290: Removed redundant code in the Source Dialog plugin.
• #11133: Page Break becomes editable if pasted.
• #11126: Fixed: Native Undo executed once the bottom of the snapshot stack is reached.
• #11131: Div Editing Area: Fixed: Error thrown when switching to source mode if the selection was in widget's nested editable.
• #11139: Div Editing Area: Fixed: Elements Path is not cleared after switching to source mode.
• #10778: Fixed a bug with range enlargement. The range no longer expands to visible whitespace.
• #11146: [IE] Fixed: Preview window switches Internet Explorer to Quirks Mode.
• #10762: [IE] Fixed: JavaScript code displayed in preview window's URL bar.
• #11186: Introduced the widgets.repository.addUpcastCallback method that allows to block upcasting given element to a widget.
• #11307: Fixed: Paste as Plain Text conflict with the MooTools library.
• #11140: [IE11] Fixed: Anchors are not draggable.
• #11379: Changed default contents line-height to unitless values to avoid huge text overlapping (like in #9696).
• #10787: [Firefox] Fixed: Broken replacement of text while pasting into div-based editor.
• #10884: Widgets integration with the Show Blocks plugin.
• #11021: Fixed: An error thrown when selecting entire editable contents while fake selection is on.
• #11086: [IE8] Re-enable inline widgets drag&drop in Internet Explorer 8.
• #11372: Widgets: Special characters encoded twice in nested editables.
• #10068: Fixed: Support for protocol-relative URLs.
• #11283: Enhanced Image: A <div> element with text-align: center and an image inside is not recognised correctly.
• #11196: Accessibility Instructions: Allowed additional keyboard button labels to be translated in the dialog window.