Merge branch 't/8663'

Author: Reinmar

CHANGES.md

@@ -3,6 +3,10 @@ CKEditor 4 Changelog
 
 ## CKEditor 4.3.4
 
+Fixed Issues:
+
+* [#8663](http://dev.ckeditor.com/ticket/8663): Fixed [`element.renameNode()`](http://docs.ckeditor.com/#!/api/CKEDITOR.dom.element-method-renameNode) not clearing [`element.getName()`](http://docs.ckeditor.com/#!/api/CKEDITOR.dom.element-method-getName) cache.
+
 ## CKEditor 4.3.3
 
 Fixed Issues:

core/dom/element.js

@@ -1705,6 +1705,8 @@ CKEDITOR.tools.extend( CKEDITOR.dom.element.prototype, {
 		this.getParent() && this.$.parentNode.replaceChild( newNode.$, this.$ );
 		newNode.$[ 'data-cke-expando' ] = this.$[ 'data-cke-expando' ];
 		this.$ = newNode.$;
+		// Bust getName's cache. (#8663)
+		delete this.getName;
 	},
 
 	/**