Ubuntu 12.04. Desktop Cube Compiz.

I set desktop size: CompizConfig Settings Manager-> General Options-> Desktop Size tab:
Horizontal Virtual Size 4. Vertical Vertual Size 2.
1. Select Vertical Vertual 1 Horizontal 1, Run any application.
2. Select Vertical Vertual 2 Horizontal 3-4.
3. When clicking on the launcher open application. switch workspace Horizontal 1 but not switch Vertical 1.
Should switch to Vertual 1 Horizontal 1 (Step 1).
This is a bug?

Thanks.