notify-osd 0.9.17-0ubuntu1 (no 0.9.18 on my up-to-date repositories) Indeed, I have the same behavior than in your screencast with your commands.
At least, know we now that this is truly a bug in Rhythmbox ! (sorry for doubting of you, notify-osd)
Let me show you my screencast (I'm very proud of it, it's my first one !)
notify-osd 0.9.17-0ubuntu1 (no 0.9.18 on my up-to-date repositories)
Indeed, I have the same behavior than in your screencast with your commands.
At least, know we now that this is truly a bug in Rhythmbox ! (sorry for doubting of you, notify-osd)
Let me show you my screencast (I'm very proud of it, it's my first one !)