It indeed seems similar, though, when I had this issue, I couldn't get it to become non-transparent again. Forcing a redraw as mentioned in that other bug doesn't work.
As I'm using Gnome Classic, this issue won't be in 11.10 (by default)
Next to that, it seems that the issue has been resolved on my pc/laptop running 11.04 as well.
It indeed seems similar, though, when I had this issue, I couldn't get it to become non-transparent again. Forcing a redraw as mentioned in that other bug doesn't work.
As I'm using Gnome Classic, this issue won't be in 11.10 (by default)
Next to that, it seems that the issue has been resolved on my pc/laptop running 11.04 as well.