The problem has resolved after a re-installation and update. I no longer face this problem.
-- Panel items occasionally do not display after log-in. https://bugs.launchpad.net/bugs/257506 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
