Qt Quick 2 application does not show the QML scene on the BlackBerry Simulator

Qt application working on other platforms seems not to show the QML (Qt Quick 2) scene on the BlackBerry simulator with NDK version 10.2.0.1155.
QML code seems to be run somehow, but the scene is not shown. Qt revision I used is a250914fecb288f82db6a7b53e70d433898eb2f4.
I also tested the template Qt Quick 2 Hello World application in Qt Creator 3.0 and the same happens. A log in QML in Component.onCompleted in the main element correctly results in the logs but screen remains black. I had to slightly modify the bar descriptor to make it load the plugins.
I couldn't run the application following http://qt-project.org/wiki/Qt5-on-BlackBerry10, I had to package and deploy it using the same commands from the command line.
I'm working on MacOSX Maverick.