No need to restart the machine to reproduce the problem. Once you have set the panel to autohide, just restart lxpanel: run this terminal command and then wait for several seconds; then mouse over the panel to cause it to pop into view:
lxpanelctl restart
No need to restart the machine to reproduce the problem. Once you have set the panel to autohide, just restart lxpanel: run this terminal command and then wait for several seconds; then mouse over the panel to cause it to pop into view:
lxpanelctl restart