I generally do the four finger swipe. The point was more that the notes 'stick' after I return to the Firefox window. With four fingers playing the sounds can

I generally do the four finger swipe. The point was more that the notes 'stick' after I return to the Firefox window. With four fingers playing the sounds can be a little wild. It took me a couple of tries to figure out why it had happened so I am guessing another user might be similarly confused. Not to take anything away from this delightful little app. I just wanted to help out by reporting a little bug I found.