Unfortunately, Sound, Icon and Badge do not work for me yet either.

With an update, it is now at least possible to use the notification tag. Since the notification actions unfortunately still do not work, I send the link to which the Progressive Web App should direct via the notification tag. In the ServiceProvider I then use the tag to open the correct page. Works so far wonderfully. However, I am eagerly waiting for the actions to work. I hope this can help you a little further.