fix(sortable): fix connected lists with helper for last spot drops

src/sortable.js

@@ -125,7 +125,7 @@ angular.module('ui.sortable', [])
               // the start and stop of repeat sections and sortable doesn't
               // respect their order (even if we cancel, the order of the
               // comments are still messed up).
-              if (hasSortingHelper(element)) {
+              if (hasSortingHelper(element) && !ui.item.sortable.received) {
                 // restore all the savedNodes except .ui-sortable-helper element
                 // (which is placed last). That way it will be garbage collected.
                 savedNodes = savedNodes.not(savedNodes.last());