Update: The following is not actually true. It was an issue with a release candidate, but does not manifest in the final version of the WebView.
However, the update introduced a bug in Cordova applications that were built with Cordova versions prior to
2.9.1 which can cause native bridge callbacks to not be received until another one is made (e.g. by switching in & out of the app). We strongly encourage all apps to update their Cordova version, or to directly apply the fix to cordova-android and cordova-js.