I looked a bit into the issue described here: http://forum.maratis3d.com/viewtopic.php?id=703

I came to the conclusion that the problem probably is about timing inside the onEvents method in MX11Window.cpp.

How often/frequent is onEvents called?

Sponk

PS: I tested the behaviour on my openSUSE installation. It worked flawlessly on KDE without GNOME 3 installed. After installation of GNOME it stopped working. I think there is something inside GNOME what could cause this misbehaviour.