Hi Stephane, I'm the new Win32 package maintainer for X2Go Client.
I see that you worked around this issue by copying over VcXsrv's fonts folder: https://lists.berlios.de/pipermail/x2go-user/2013-January/001253.html
I've experienced this bug too with ClearCase 8.0.0's "xclearcase" GUI. It is a very old UNIX/Linux GUI and it uses motif.
My successful workaround was to both install a bunch of fonts packages server-side (including international fonts,) and to copy over the fonts directory.
Still, I believe that we should take the same approach that NX did and provide a seperate setup.exe containing the extra fonts. Unless there are any objections, that will officially be on my to do list as the win32 package maintainer.
Note that I do not want to include the fonts in the main X2Go Client setup.exe because:
For reference to others who need to copy fonts:
-Mike#2