/usr/share/lxqt/ is in lxqt-panel 0.12.0-8ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/lxqt/lxqt-panel/
/usr/share/lxqt/lxqt-panel/clock.desktop
/usr/share/lxqt/lxqt-panel/colorpicker.desktop
/usr/share/lxqt/lxqt-panel/cpuload.desktop
/usr/share/lxqt/lxqt-panel/desktopswitch.desktop
/usr/share/lxqt/lxqt-panel/directorymenu.desktop
/usr/share/lxqt/lxqt-panel/dom.desktop
/usr/share/lxqt/lxqt-panel/kbindicator.desktop
/usr/share/lxqt/lxqt-panel/mainmenu.desktop
/usr/share/lxqt/lxqt-panel/mount.desktop
/usr/share/lxqt/lxqt-panel/networkmonitor.desktop
/usr/share/lxqt/lxqt-panel/quicklaunch.desktop
/usr/share/lxqt/lxqt-panel/sensors.desktop
/usr/share/lxqt/lxqt-panel/showdesktop.desktop
/usr/share/lxqt/lxqt-panel/spacer.desktop
/usr/share/lxqt/lxqt-panel/statusnotifier.desktop
/usr/share/lxqt/lxqt-panel/sysstat.desktop
/usr/share/lxqt/lxqt-panel/taskbar.desktop
/usr/share/lxqt/lxqt-panel/tray.desktop
/usr/share/lxqt/lxqt-panel/volume.desktop
/usr/share/lxqt/lxqt-panel/worldclock.desktop
/usr/share/lxqt/panel.conf