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

[micred]

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]