Draggable: Ensure parent is correct after dragging through sortable

Fixes #10669

Author: mikesherov

tests/unit/draggable/draggable_options.js

@@ -405,6 +405,29 @@ test( "connectToSortable, dragging through one sortable to a second", function()
 	element.simulate( "drag", dragParams );
 });
 
+test( "connectToSortable, dragging through a sortable", function() {
+	expect( 1 );
+
+	var draggable = $( "#draggableSortable" ).draggable({
+			scroll: false,
+			connectToSortable: "#sortable2"
+		}),
+		sortable = $( "#sortable2" ).sortable(),
+		sortableOffset = sortable.offset();
+
+	// http://bugs.jqueryui.com/ticket/10669
+	// Draggable: Position issue with connectToSortable
+	draggable.one( "dragstop", function() {
+		equal( draggable.parent().attr( "id" ), "sortable", "restored draggable to original parent" );
+	});
+
+	draggable.simulate( "drag", {
+		x: sortableOffset.left + 25,
+		y: sortableOffset.top + sortable.outerHeight() + 400,
+		moves: 20
+	});
+});
+
 test( "{ containment: Element }", function() {
 	expect( 1 );
 

ui/draggable.js

@@ -800,6 +800,9 @@ $.ui.plugin.add( "draggable", "connectToSortable", {
 				if ( !sortable.isOver ) {
 					sortable.isOver = 1;
 
+					// Store draggable's parent in case we need to reappend to it later.
+					draggable._parent = ui.helper.parent();
+
 					sortable.currentItem = ui.helper
 						.appendTo( sortable.element )
 						.data( "ui-sortable-item", true );
@@ -876,8 +879,9 @@ $.ui.plugin.add( "draggable", "connectToSortable", {
 						sortable.placeholder.remove();
 					}
 
-					// Recalculate the draggable's offset considering the sortable
-					// may have modified them in unexpected ways (#8809)
+					// Restore and recalculate the draggable's offset considering the sortable
+					// may have modified them in unexpected ways. (#8809, #10669)
+					ui.helper.appendTo( draggable._parent );
 					draggable._refreshOffsets( event );
 					ui.position = draggable._generatePosition( event, true );