upstream consider it as a duplicate from GTK bug #83278 which is fixed to SVN now
** Changed in: gnome-panel (Ubuntu) Sourcepackagename: gnome-panel => gtk+2.0 Status: Confirmed => Fix Committed -- Stray opaque lines (3) in transparent notification area https://launchpad.net/bugs/35090 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs