I googled it, but didn't came up with a solution (probably due to wrong searchterms). I am connecting to a x2go server just fine in fullscreen mode. When I minimize the session (using the top right hot corner) and go back, I can't open the window after the second time I did that (minimize & reopen the window). The session still seems to be working & valid, just I can't see the window.

I am using x2go-stable from ubuntu ppa on Ubuntu-13.10 with standard unity (no tweaks). Did someone have a similar problem and solved it?

Best regards, 

  Markus