Firebug Lite on iPad does not detect or register JavaScript errors

I use Firebug Lite to debug an iPad application. It works great, and I can see CSS files, JavaScript files and check the DOM tree directly on the iPad.

However, it does not seem to detect JavaScript errors and write them to the console. By default, the iOS safari console says that there are JavaScript errors, but Firebug does not detect or show them. By the way, my iPad works under iOS 5.

Any ideas?