Issues with workspaces

[eGore]

Hi list,

I have a problem with moving a window from the last to the first (or
from the first to the last) workspace. It simply stays on that workspace
(though it works for moving from workspace 1 to workspace 2). What I
did:
1.) Open a window on first workspace
2.) Click to move it
3.) Move it far to the left so it would (normally) land on the last
workspace
4.) Be surprised when the window stays on first desktop and just moves
to the right side

Comments?

Regards,
  Christoph