Since CB is taking big steps towards 1.0, it's time to keep an eye on robustness and user experience.
When unhandled exceptions occur, CB is usually terminated. On all devices I tested with, CB's title bar remains visible above windows' start menu and by some reason even hardware keys to activate the start menu don't work anymore. In fact, the whole device is rendered unusable after abnormal terminations of CB and has to be restarted.
If anybody has an idea why this is happening and/or how this problem can be solved, please don't hesitate to let CB handle exceptions more gacefully.