From a1d69208bad175a27c7b50c27fdc10001563cd4d Mon Sep 17 00:00:00 2001
From: Hannah Methvin <hannahmethvin@gmail.com>
Date: Sun, 18 Oct 2015 12:36:43 -0400
Subject: [PATCH] Mouse: Don't stop propagation of mouseup

Fixes #10818
---
 tests/unit/draggable/core.js | 17 +++++++++++++++++
 ui/widgets/draggable.js      |  4 ++--
 ui/widgets/mouse.js          |  2 +-
 3 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/tests/unit/draggable/core.js b/tests/unit/draggable/core.js
index 8bc751e0e..9efe9d3f1 100644
--- a/tests/unit/draggable/core.js
+++ b/tests/unit/draggable/core.js
@@ -345,4 +345,21 @@ test( "ui-draggable-handle managed correctly in nested draggables", function( as
 	assert.hasClasses( child, "ui-draggable-handle", "child retains class name on destroy" );
 } );
 
+test( "does not stop propagation to window", function( assert ) {
+	expect( 1 );
+	var element = $( "#draggable1" ).draggable();
+
+	var handler = function() {
+		assert.ok( true, "mouseup propagates to window" );
+	};
+	$( window ).on( "mouseup", handler );
+
+	element.simulate( "drag", {
+		dx: 10,
+		dy: 10
+	} );
+
+	$( window ).off( "mouseup", handler );
+} );
+
 } );
diff --git a/ui/widgets/draggable.js b/ui/widgets/draggable.js
index f61c38ce0..b459afe00 100644
--- a/ui/widgets/draggable.js
+++ b/ui/widgets/draggable.js
@@ -255,7 +255,7 @@ $.widget( "ui.draggable", $.ui.mouse, {
 		if ( !noPropagation ) {
 			var ui = this._uiHash();
 			if ( this._trigger( "drag", event, ui ) === false ) {
-				this._mouseUp( {} );
+				this._mouseUp( new $.Event( "mouseup", event ) );
 				return false;
 			}
 			this.position = ui.position;
@@ -322,7 +322,7 @@ $.widget( "ui.draggable", $.ui.mouse, {
 	cancel: function() {
 
 		if ( this.helper.is( ".ui-draggable-dragging" ) ) {
-			this._mouseUp( {} );
+			this._mouseUp( new $.Event( "mouseup", { target: this.element[ 0 ] } ) );
 		} else {
 			this._clear();
 		}
diff --git a/ui/widgets/mouse.js b/ui/widgets/mouse.js
index 938d0f4b7..1d8458b27 100644
--- a/ui/widgets/mouse.js
+++ b/ui/widgets/mouse.js
@@ -189,7 +189,7 @@ return $.widget( "ui.mouse", {
 		}
 
 		mouseHandled = false;
-		return false;
+		event.preventDefault();
 	},
 
 	_mouseDistanceMet: function( event ) {
-- 
2.39.5