#489: * Fixed 'clone'

Sortable.js

@@ -573,7 +573,7 @@
 
 				target = _closest(evt.target, options.draggable, el);
 				dragRect = dragEl.getBoundingClientRect();
-
+				parentEl = target && target.parentNode; // actualization
 
 				if (revert) {
 					_cloneHide(true);
@@ -725,6 +725,7 @@
 
 					if (rootEl !== parentEl) {
 						newIndex = _index(dragEl);
+
 						if (newIndex != -1) {
 							// drag from one list and drop into another
 							_dispatchEvent(null, parentEl, 'sort', dragEl, rootEl, oldIndex, newIndex);