I open some file with Evince (in default workspace 1) then I right-click on window titlebar and select "Move to workspace 2"
What happens is that Evince window disappears from workspace 1, but it can't be found in any workspace. Process is running, as I can confirm with System Monitor.
In CompizConfig I can't find any option describing workspaces, to none for customizing workspaces (like don't show on Launcher if not in current workspace - but that's another story).
I can only find some settings with gconf-editor - under Metacity there is option to set number of workspaces (currently set to 4) and that's the number of workspaces shown when I click on "Workspace Switcher" icon on Launcher
So, I would like to solve this problem somehow with your help.