Thank you for reporting this bug to Ubuntu. Ubuntu 16.04 is still supported, however Lubuntu only supports the package for 3 years, that support ended 2019-April.
Ubuntu 17.04 (zesty) reached end-of-life on January 13, 2018. Ubuntu 16.10 (yakkety) reached end-of-life on July 20, 2017. Ubuntu 16.10 (yakkety) reached end-of-life on July 20, 2017. Ubuntu 15.10 (wily) reached end-of-life on July 28, 2016. Ubuntu 15.04 (vivid) reached end-of-life on February 4, 2016. See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in. ** Changed in: lxpanel (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1731371 Title: /usr/bin/lxpanel:11:f_find_menu_launchbutton_recursive:taskbar_task_control_event:_gtk_marshal_BOOLEAN__BOXED:g_closure_invoke:signal_emit_unlocked_R To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxpanel/+bug/1731371/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs