Hey, I just tried the Projucer. When I launch the application (fresh project of type Audio Application) and close its window the application crashes (Windows 10 64 Bit). I guess that is because I have to press Stop Application instead (because of the Live Coding integration).
Then it would be useful if I could click on Stop Application more easily (which is hidden in the menu). The keyboard shortcut is of no big help to speed things up as I would have to click on the Projucer window before I can use the shortcut. So I think the easiest way to stop the application would be if there would be toolbar buttons in the Projucer with Launch Application and Stop Application buttons.