Jquery blockUI not preventing tab key to navigate to blocked content when we used together with Jquery HotKeys plugin. This is because Jquery Hotkeys is overriding $(document).bind( type,eventdata, function) method  and BlockUI is using same method to prevent tabbing.

 

I have done ugly way by modifying blockui plugin code to use $(document).bind( type, function) method without passing options as event data and used default options directly in handler method.I like to see as part of plugin implementation rather than having patch work done myself.