Changelog entry.

CHANGES.md

@@ -23,6 +23,7 @@ Fixed Issues:
 * [#13140](http://dev.ckeditor.com/ticket/13140): Fixed: Error thrown when dropping a block widget right after itself.
 * [#13176](http://dev.ckeditor.com/ticket/13176): [IE8] Fixed: Errors while drag&drop of embed widgets.
 * [#13015](http://dev.ckeditor.com/ticket/13015): Fixed: Dropping image file on [Enhanced Image](http://ckeditor.com/addon/image2) causes page reload.
+* [#13080](http://dev.ckeditor.com/ticket/13080): Fixed: Ugly notification when response has HTML content.
 * [#13128](http://dev.ckeditor.com/ticket/13128): Fixed: Various issues regarding cloning IDs of elements:
   * Fixed the default behavior of [`range.cloneContents()`](http://docs.ckeditor.com/#!/api/CKEDITOR.dom.range-method-cloneContents), [`range.extractContents()`](http://docs.ckeditor.com/#!/api/CKEDITOR.dom.range-method-extractContents) methods which now clone IDs similarly to their native counterparts.
   * Added `cloneId` arguments to the above methods and [`range.splitBlock()`](http://docs.ckeditor.com/#!/api/CKEDITOR.dom.range-method-splitBlock) and [`element.breakParent()`](http://docs.ckeditor.com/#!/api/CKEDITOR.dom.element-method-breakParent). Mind the default values and special behavior in the `extracContents()` method.