Well, Arnaud found his "bug" already. Either using actions or timeouts with notifications, if notify-osd is the handling notification-daemon, you'll get the fallback-dialog. According to https://wiki.ubuntu.com/NotificationDevelopmentGuidelines notifications should not use either of these. notify-osd has this fallback-dialog to more bluntly point out the discouraged use of them.
** Changed in: notify-osd (Ubuntu) Status: New => Invalid -- First notification appears as a GtkMessageDialog https://bugs.launchpad.net/bugs/401602 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs