When you have two screens of different sizes set up in clone mode, the system tray area, or whatever it is called on the top-right of the screen, is duplicated. One appears at the top-right corner of the bigger screen, and the other at the position corresponding to the top-right corner of the smaller screen, but is obviously visible also in both.
I guess this is by design, though the "inner" one should be enough, and I wonder what happens if the difference between the two screen sizes is not big enough...
However, the biggest problem is that when you expand one of the dropdown menus in the "inner" tray, it expands to the right, so it is not always completely visible within the area of the smaller screen. If the duplication of the system tray is meant to make it visible also in the inner screen, then this defeats the very purpose of its existence, rendering it useless.
The correct behavior would be: the "inner" menu should behave as if the smaller screen (for which it is meant) was the only available area.
Also, the "outer" one (the one on the right) is probably unnecessary and maybe should be removed altogether.
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: unity 7.0.0daily13.06.19~13.04-0ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-28.41-generic 3.8.13.5
Uname: Linux 3.8.0-28-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.9.2-0ubuntu8.3
Architecture: i386
CompizPlugins: [core,composite,opengl,decor,vpswitch,mousepoll,compiztoolbox,snap,commands,place,resize,session,regex,grid,wall,move,gnomecompat,imgpng,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
Date: Tue Aug 13 23:41:57 2013
InstallationDate: Installed on 2010-06-23 (1147 days ago)
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
MarkForUpload: True
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: Upgraded to raring on 2013-08-10 (3 days ago)
Can you still reproduce that?