Click on indicator area in the main monitor mapped also as click in the secondary smaller monitor

As described in the title. It's like the click handler make the action as I click in the first monitor AND in the second monitor.
Example in the attached screenshoot.

Tested on oneiric and on precise (20120301).

How to replicate: (it's not the only way to replicate but the first I obtain poking around a bit. It occours even between suspend cycles but I can't replicate it now)
- click on an app in the indicator menu on the smaller secondary screen
- while the menu is still open disconnect the secondary monitor (the hard way, pulling the VGA cord)
- now you get the weird behaviour even if you reconnect the secondary monitor (until you restart unity).

Log of unity launched from console:
[cut]
compiz (core) - Warn: glXCreatePixmap failed
compiz (core) - Warn: Couldn't bind background pixmap 0x3c00001 to texture

Screen geometry changed:
   0x0x1440x900
   1440x0x1024x768

unity-panel-service: nessun processo trovato
WARN 2012-03-01 09:32:03 unity.launcher Launcher.cpp:2863 Object registration failed. Won't get dynamic launcher addition.
failed to create drawable
compiz (core) - Warn: glXCreatePixmap failed
compiz (core) - Warn: Couldn't bind background pixmap 0x4000001 to texture

Screen geometry changed:
   0x0x1440x900
[cut]