tightvncserver on Kali: Super key always pressed

I'd like to use a computer with kali via VNC Server.
So I installed tightvncserver and on my host Remmina.

VNC Works well but: It seem s the super key is pressed all the time.
I installed xvnc4viewer and the behaviour is the same. Apparently it is tightvncserver, but I never ran into this.

Computer has full kali linux 1.0.8, NVidia Graphics and a screen. But ultimately I want/need to use VNC.

Any help getting rid of super-always-pressed without removing the shortcurs as they are handy?