If the M12V window is open and i open a differnt window ( any plugin or programm window ) and i switch back to my host, the M12V window is hidden. To reactivate the window i must close the window in Ableton Live and reopen it, and this all the time.
OS X 10.8.5, Ableton Live 9.1.6, Fast Track Ultra 8R 2.3 GHz I7 16GB Ram
M12V version 1.0.0.414