fixed: menu key support conflicting with browser native menu keys

AppKit/CPMenu/CPMenu.j

@@ -1077,6 +1077,9 @@ var _CPMenuBarVisible               = NO,
 
                 anEvent._isKeyEquivalent = YES; // prevent the menu keystroke from beeing inserted into textview
                 [self performActionForItemAtIndex:index];
+
+                // we are done with this event in cappuccino space. do not let the browser do something weird additionally (e.g. command-o).
+                _CPDOMEventStop(anEvent._DOMEvent);
             }
             else
             {