Well an oscillator without an amplitude envelope will just sound forever, that’s how it is and that’s why Falcon automatically links a new envelope to every oscillator you add. You could later remove all the amp envelopes from the individual keygroups and add an envelope on program level which you can link to all existing keygroups. And if you don’t need the pitch bend control just delete it – open tree view, click on the control you want to delete, right click -> delete node.