I can confirm this issue, having the same problem in Ubuntu Mate 18.04 Beta2.
this is the terminal output:
GeoGebra 4.0.34.0 (Debian version 4.0.34.0+dfsg1-4) 22 June 2012 Java 10.0.1
*** Message from [geogebra.main.Application.setUpLogging]
/tmp/GeoGebraLog_bixyoyudww.txt
I can confirm this issue, having the same problem in Ubuntu Mate 18.04 Beta2.
this is the terminal output:
GeoGebra 4.0.34.0 (Debian version 4.0.34.0+dfsg1-4) 22 June 2012 Java 10.0.1 main.Applicatio n.setUpLogging] og_bixyoyudww. txt
*** Message from [geogebra.
/tmp/GeoGebraL