Comment 4 for bug 342396

calum : Thanks for your comment. I realised that my last statement was wrong due to a bad understanding of the issue. Therefore I confirm this bug report in latest ubuntu 10.04. This should probably be reported against libwnck in GNOME.

The fact is that compiz use its own viewports specification to manage multiple desktops. Libwnck is does not support compiz viewport, therefore when compiz is the active window manager, many GNOME applets that relate to windows and desktops are subject to lose functionalities, unless GNOME decide to make libwnck "interoperable" with compiz.

Some work has been done on this already, but I think that GNOME currently put more work on GNOME 3 than to fix these issues. Libwnck is, AFAIK, in complete rewriting process.