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Lxpanel Lubuntu, reserved space for my second monitor

I have a problem about reserved spaced for my LXpanel on one of my two monitors using Lubuntu 12.10.


Bug symptoms:
After starting Lubuntu to one monitor setup
$ xrandr
Screen 0: minimum 320 x 200, current 1920 x 1848, maximum 8192 x 8192
...
I switch to dual monitor set up by running
 
xrandr --output LVDS1 --auto --output VGA1 --auto --above LVDS1

Now I have LXPanel displayed on the left side of both LVDS1 and VGA1, which I like. However, maximizing the window on LVDS1 causes the LXPanel to cover the maximized window, so I cannot see the left bar of the maximized window.

Temporal work around:
Open Panel settings (by right clicking the LXpanel) and unchecked and rechecked again
the Advanced/Reserve space, and not covered by maximized windows

Todo:
a) Report it? Where?
b) Automate it together with the xrandr command

Btw. During searching for solution of this bug I have discovered how to restart the LXpanel at Lubuntu.

killall lxpanel
lxpanel --profile Lubuntu &