Sortable: Reverted 56b0da5 as #4551 is invalid.

Author: rdworth

tests/visual/sortable/sortable_ticket_4551.html

@@ -614,6 +614,10 @@ $.widget("ui.sortable", $.ui.mouse, {
 		for (var i = this.items.length - 1; i >= 0; i--){
 			var item = this.items[i];
 
+			//We ignore calculating positions of all connected containers when we're not over them
+			if(item.instance != this.currentContainer && this.currentContainer && item.item[0] != this.currentItem[0])
+				continue;
+
 			var t = this.options.toleranceElement ? $(this.options.toleranceElement, item.item) : item.item;
 
 			if (!fast) {