Fixed Arrowkey panning bug

src/viewer.js

@@ -2728,8 +2728,8 @@ function onCanvasKeyPress( event ) {
     var canvasKeyPressEventArgs = {
       originalEvent: event.originalEvent,
       preventDefaultAction: false,
-      preventVerticalPan: event.preventVerticalPan,
-      preventHorizontalPan: event.preventHorizontalPan
+      preventVerticalPan: !this.panVertical,
+      preventHorizontalPan: !this.panHorizontal
     };
 
     // This event is documented in onCanvasKeyDown

test/demo/basic.html

@@ -25,9 +25,7 @@
             id: "contentDiv",
             prefixUrl: "../../build/openseadragon/images/",
             tileSources: "../data/testpattern.dzi",
-            showNavigator:true,
-            panVertical: false,
-            panHorizontal: true
+            showNavigator:true
         });
     </script>
 </body>