Emacs disappearing titlebar in x2go session

[Roderick Johnstone]

Hi

I'm seeing a curious effect with emacs (and apparently only emacs) in an 
x2go KDE session on Fedora 20 beta.

As soon as the emacs window takes input focus the title bar disappears. 
I can still eg drag the window by grabbing beside the menu items though.

Also, the emacs status bar (roughly 3/4 the way down the window) and 
stuff below it also disappears from the emacs window (at least as far as 
I can remember - my x2go session is broken badly at the moment).

Does anyone have any ideas where I look to find out whats happening 
here, and hopefully prevent it happening again?

Thanks

Roderick Johnstone