Cleanly Terminating a Fullscreen Shadow Session Locally doesn't Work on MS Windows

[sunweaver]

From X2Go BTS:
http://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=847

package: nxagent

When trying to terminate a shadow session running in fullscreen mode
on a MS Windows client, Alt-Tab gets passed to MS Windows, so one can
reach the X2GoClient control buttons (folder sharing, pause,
terminate), but clicking pause or terminate doesn't do anything. Only
the "X Button" (upper right corner of the window decoration) of
X2GoClient has an effect - but obviously also terminates x2goclient.exe.
xgoterminatesession will, of course, work, when run on the remote end.