Comment 2 for bug 1015147

     0xc00c79 (has no name): () 648x676+392+73 +392+73
        2 children:
        0xc00c7a (has no name): () 632x642+8+26 +400+99
           1 child:
           0x2a00709 "sil2100@amatsu: ~/canonical/compiz/sru/cherry_3115": ("gnome-terminal" "Gnome-terminal") 632x642+0+0 +400+99
              1 child:
              0x2a0070a (has no name): () 1x1+-1+-1 +399+98

This would indicate to me that the window is there, but missing its input shape.

Showdesktop mode perhaps?