When executing the demo on ​http://jqueryvalidation.org/files/demo/custom-methods-demo.html the behaviour of the icons is not as expected. Once a field gets a OK checked icon, the icon stays forever and never gets changed to a Failed icon

Hi, I have discovered that in the latest version of jQuery (2.1.1), I receive an error when I attempt to load it inside a sandbox in a Chrome App. All that needs to be done to replicate it is to include jquery 2.1.1 inside the sandbox in the chrome app. I have created an example app to replicate: ​https://github.com/solgarius/jquery-chrome-sandbox-unload-issue

The error appears to be related to some code that designed to apply for IE11.

As far as I can tell, this issue only generates the error when the app is loaded and it does not appear to affect my application. All jQuery seems to still behave correctly inside (and outside) the sandbox.

I do not have this issue in chrome itself, only when it is inside the sandbox of a chrome app. Furthermore, the issue is not in version 2.0.3 of jQuery, so it was likely added in the 2.1.* strain.

Since the event module is an optional dependency of ajax, the event aliases should not be added unless explicitly included and the event module is present.