I've tested and it works fine with the apps that you tried, (I guess it's the ones with their own icon in ubuntu-mono), but if you use other applications, such as liferea, amule, deluge, tomboy... the spacing between the icons is quite different, and it seems messed up.
I've tested and it works fine with the apps that you tried, (I guess it's the ones with their own icon in ubuntu-mono), but if you use other applications, such as liferea, amule, deluge, tomboy... the spacing between the icons is quite different, and it seems messed up.