Ticket #6215: 6215.patch

_source/plugins/styles/plugin.js

@@ -703 +703 @@
                                                  * them before removal.
                                                  */
                                                 element.mergeSiblings();
-                                                removeFromElement( this, element );
-
+                                                if ( element.getName() == this.element )
+                                                        removeFromElement( this, element );
+                                                else
+                                                        removeOverrides( element, getOverrides( this )[ element.getName() ] );
                                         }
                                 }
                         }