"GeoGebra 4.0.34.0 (Debian version 4.0.34.0+dfsg1-6) 22 June 2012 Java 11.0.1" starts correctly in my Cosmic 18.10 Ubuntu, ... sorry I have no 18.04 installation to try out.
"GeoGebra 4.0.34.0 (Debian version 4.0.34.0+dfsg1-6) 22 June 2012 Java
11.0.1" starts correctly in my Cosmic 18.10 Ubuntu, ... sorry I have no
18.04 installation to try out.