This is exactly the correct behavior. I've been trying to figure out if it could be enabled through an extension. I'm a little worried that sites will all star

This is exactly the correct behavior. I've been trying to figure out if it could be enabled through an extension. I'm a little worried that sites will all start using javascript to trigger stuff following any user action, much like a bunch of terrible sites do now with popup ads. I think the best behavior would be to only show the icon, and let sites that need it use the DOM to tell the user to click the icon. If sites want to trash their own DOM so try to get users to enable notifications, so be it, but at least this could be blocked by ad blockers. On the other hand, I don't see Mozilla doing this because they're far too concerned with discoverability by novice users.