1 files changed, 23 insertions, 0 deletions
diff --git a/tests/unit/draggable/core.js b/tests/unit/draggable/core.js
index 8bc751e0e..61d8503ea 100644
--- a/tests/unit/draggable/core.js
+++ b/tests/unit/draggable/core.js
@@ -345,4 +345,27 @@ test( "ui-draggable-handle managed correctly in nested draggables", function( as
 	assert.hasClasses( child, "ui-draggable-handle", "child retains class name on destroy" );
 } );
 
+// Support: IE 8 only
+// IE 8 implements DOM Level 2 Events which only has events bubble up to the document.
+// We skip this test since it would be impossible for it to pass in such an environment.
+QUnit[ document.documentMode === 8 ? "skip" : "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 );
+	}
+);
+
 } );