While developing a new, jQuery based, frontend, we encountered some strange behavior while testing a release of the app on the iPad 2 running iOS 5.1.1. Between a bunch of commits the iPad's JavaScript just stopped to do anything. Not a single event was fired, nothing happend.
The debugging tools on the iPad are not that great and so was the debugging process. We found out, that the Konquerer Browser uses the same engine as iOS and the bug was reproducable in Konqueror, too. Git bisect came into play and we found the commit that killed the iPad. We changed the modenizr full build to a custom slim build. This kicked out the "Touch Event" part of the build and this was the reason for all the trouble. The "Touch Event" part defines the bind() function if it is missing in the JavaScript engine. We borrowed the function from modenizr and made the iPad work again.
Sidenote: iOS 6 beta 4, which has a new JavaScript Engine, works without any problems.
