Unfortunately I don't know the reliably steps.
I only remember that it happened when I had more running application (more icons with running applications on gnome-panel).
I was working with some of running application and tried to switch to another one using click on gnome-panel. Then bug occurred.
Unfortunately I don't know the reliably steps.
I only remember that it happened when I had more running application (more icons with running applications on gnome-panel).
I was working with some of running application and tried to switch to another one using click on gnome-panel. Then bug occurred.