When using webview+ although the app compiles fine it will not start producing just a blank page, running it on webview the project runs just fine.
Phonegap Google Maps Plugin: https://github.com/wf9a5m75/phonegap-googlemaps-plugin
To recreate the problem you just need to add the phonegap google maps plugin using
cocoonjs plugin add plugin.google.maps --variable API_KEY_FOR_ANDROID="YOUR_API_KEY_IS_HERE"
note: leaving out the API_KEY is fine for testing purposes